BASE METAL MINES AND PROSPECTS OF THE SOUTHWEST DUCKTOWN DISTRICT, GEORGIA by Charlotte E. Abrams U.S. Nuclear Regulatory Commission Washington, D.C. 20555 GEORGIA DEPARTMENT OF NATURAL RESOURCES ENVIRONMENTAL PROTECTION DMSION GEORGIA GEOLOGIC SURVEY INFORMATION CIRCULAR 78 Acknowledgements The author would like to acknowledge the assistance and cooperation of Tennessee Chemical Company in providing access to core and historical records from the Southern Ducktown District. Tennessee Chemical Company geologists Randy Slater and Charles Acker provided information, field assistance and encouragement throughout the course of the project. Access to the University of Georgia, Department of Geology, XRF Laboratory and assistance from Dr. James Whitney with the norms programs is greatly appreciated. The project also benefited from microprobe analyses by Sandra Whitney. Special thanks are due to Gilles Allard, Randy Slater and Charles Acker for their thought-provoking discussions during the project and their review of the final manuscript, and to Sharon Pauley for her invaluable assistance in its final preparation. Cover: Miners at the #20 mine, date unknown. Photo courtesy of Geo~ Department of Archives and History. Publications Editor: Patricia Allgood BASE METAL MINES AND PROSPECTS OF THE SOUTHWEST DUCKTOWN DISTRICT, GEORGIA by Charlotte E. Abrams Prepared as part of the Accelerated Economic Minerals Program GEORGIA DEPARTMENT OF NATURAL RESOURCES J. Leonard Ledbetter, Commissioner ENVIRONMENTAL PROTECTION DMSION Harold F. Reheis, Assistant Director GEORGIA GEOLOGIC SURVEY William H. McLemore, State Geologist Atlanta 1987 INFORMATION CIRCULAR 78 TABLE OF CONTENTS Page Abstract. .. .. .. . ...... ..... ......... .. ...... . . ............................. . .... ... 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Geology ... . . ............ .. ... .. ... . ............................. .. . ...... .. ...... . 1 Metamorphism and Deformation . . .. . ... . . .. . . . .. . .. . .. . . . .. .. . .. . .. . .. . .. . . . .. . 4 Mineralized Areas. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 #20Mine .......................................... .... ............ .. .......... .... . 6 Mobile Mine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Prospects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Alteration Zones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Iron Formation and Tourmaline . .. . .. ... .. . . . . .. . .. . . . .. .. ... . .. .. . .. . .. ... .. ... . 18 Associated Igneous Rocks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Summary ..... ........... ............. .. ...... ... . ....... ..... ...... ..... ..... ... .. 20 References. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Appendix A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 iii mustrations Page Figure 1. Location map. Epworth quadrangle is indicated. 2 Figure 2. Regional map showing geologic features (modified after Williams, 1978). 3 Figure 3. Type locality of the Fightingtown Creek Amphibolite. 4 Figure 4. Map of the Ducktown District showing locations of mines and prospects and the Fightingtown Creek Amphibolite. Amphibolite as shown is based on surface and subsurface exposures. 5 Figure 5. Map of the #20 Mine (modified from Tennessee Chemical Company records) showing mine working and locations of drill holes by Tennessee Copper Company. 7 Figure 6. The #20 Mine, date unknown. Georgia State Archives Photograph. 8 Figure 7. Banded iron formation (exhalite) with layer of limonite (after pyrite) and quartz. 10 Figure 8. Map of the Mobile Mine and Jeptha Patterson Prospect (modified from Tennessee Chemical Company records) showing abandoned workings and locations of holes drilled by Tennessee Copper Company. 11 Figure 9. Map of the Mt. Pisgah Prospect (modified from Tennessee Chemical Company records) showing abandon- ~~~. ~ Figure 10. Map of the Bryant and Kellogg Prospects (modified from Tennessee Chemical Company records) showing abandoned workings and locations of holes drilled by Tennessee Copper Company. 14 Figure 11. Map of the Payne Prospect (modified from Tennessee Chemical Company records) showing abandoned workings and locations of holes drilled by Tennessee Copper Company. 15 Figure 12. Map of the Sally Jane Project (modified from Tennessee Chemical Company records) showing aban- doned workings. 16 Figure 13. Map of the Tanner Prospect (modified from Tennessee Chemical Company records) showing abandoned workings. 17 Figure 14. Coarse staurolites from the southwestern Ducktown district. 18 Figure 15. MglAI alteration zone rock showing radiating tremolite. 19 Figure 16. Banded iron formation (exhalite) from the Ducktown area. Rock contains layers of sulfides, magnetite, and quartz. 19 Figure 17a. Discrimination of volcanic rock types based on Ti02 vs FeO*/MgO (after Miyashiro, 1975). A=Calc- alkalic series; B=Calc-alkalic and tholeiitic series; and C=Tholeiitic series( o=Pumpkinvine Creek Formation after McConnell, 1980; A =Hillabee Chlorite Schist after Tull and others, 1978; and x= Fightingtown Creek Amphilbolite, this report). 23 Figure 17b. Discrimination of volcanic rock series based on Ni vs FeO*/MgO relationship (after Miyashiro and Shido, 1975; o=Pumpkinvine Creek Formation after McConnell, 1980;A =Hillabee Chlorite Schist after Tull and others, 1978; and x=Fightington Creek Amphibolite this report). 23 iv Page Figure 17c. Discrimination of volcanic rock series based on Cr vs FeO*/MgO relationship (after Miyashiro and Shido, 1975; o=Pumpkinvine Creek Formation after McConnell, 1980; =Hillabee Chlorite Schist after Tull and others, 1978; and x=Fightington Creek Amphibolite this report). 24 Figure 17d. Discrimination of ocean floor basalts (OFB) vs low potassium tholeiites (LKT) on the basis of Cr vs Ti02 (after Pearce, 1975; o=Pumpkinvine Creek Formation after McConnell, 1980; ~ =Hillabee Chlorite Schist after Tull and others, 1978; and x=Fightington Creek Amphibolite this report). 24 Figure 18. Felsic volcanic rock from the Cherokee Mine, Ducktown, Tennessee. 25 Figure 19. Generalized model for the Ducktown District. 25 Tables Table 1. Assays of samples from the southwestern Ducktown District. 8 Table 2. Whole rock analyses of igneous rocks of the Ducktown District. 21 v BASE METAL MINES AND PROSPECTS OF lHE SOUTHWEST DUCKTOWN DISTRICT, GEORGIA Charlotte E. Abrams Abstract Massive sulfide deposits of the Ducktown area, Tennessee, have been extensively studied and are recognized by recent workers to be volcanogenic sediment-hosted deposits. Less information is available for abandoned mines and prospects to the southwest in Fannin County, Georgia, which lie on trend with those at Ducktown. The southernmost deposits (#20, Mobile, Sally Jane, Jeptha Patterson, Bryant, Kellogg, etc.) lie within rocks of the Great Smoky Group and exhibit ore/host rock relationships similar to deposits at Ducktown. Previously active mines ofFannin County are spatially related to an amphibolite and banded iron formation. All deposits are associated with some form of alteration zone (magnesiumaluminum or aluminosilicate). As a result of folding, mineralized zones are repeated and form three nearly parallel linear trends consistent with the orientation of mineralized horizons to the northeast in the Ducktown area. Examination of drill core and logs (courtesy of Tennessee Chemical Company) reveals sulfides of pyrite and pyrrhotite may be less massive than those at Ducktown, but base metals of copper and zinc are present, in addition to trace amounts of silver and gold. Introduction Abandoned sulfide mines and prospects in Fannin County, Georgia, make up the southwestern portion of the Ducktown sulfide district. The Ducktown sulfide district forms a northeast-southwest trending belt, for approximately 13 miles (22 km) into the Epworth, Georgia 1:24,000 topographic quadrangle (Fig. 1). Ore deposits in the Ducktown district are located in the Blue Ridge geologic province within the late Precambrian, predominantly metasedimentary Great Smoky Group. The Great Smoky Group consists dominantly of clastic sedimentary units of metaconglomerate, metagreywacke, and schist with subordinate meta-igneous rocks. Ore deposits of the study area are confined to the lowermost portion of the Great Smoky Group, defined as the Copperhill Formation (Hurst, 1955). This report describes deposits predominantly within the southwestern portion of the Ducktown district and is chiefly confined to the area of the Epworth quadrangle. Although much detailed work has been concentrated in the Ducktown basin (northeastern part of the district), ore horizons in the southwestern part of the Ducktown sulfide district, in Georgia, have received little attention in recent years. Detailed investigations by Emmons and Laney (1911, 1926) concentrated on the Ducktown-Copperhill area with cursory examinations of some of the mines and prospects in the southwestern portion of the district. LaForge and Phalen (1913) examined the geology of the southernmost Ducktown district, but generally relied upon Emmons and Laney's descriptions ofthe deposits. Shearer and Hull (1918), in a description of pyrite deposits of Georgia, described mines and prospects of the southwestern Ducktown district, but descriptions of most deposits were only cursory and their report did not include descriptions of all prospects of the area. All earlier reports attributed origin of the Ducktown ores to limestone replacement. This interpretation resulted from the abundance of calcium silicates and calcite as gangue minerals. Recent workers (Addy and Ypma, 1977; Gair and Slack, 1980; Hutchinson, 1980; Slater, 1982; Fox, 1984; Abrams, 1985; and Slater and others, 1985) favor a premetamorphic or syngenetic origin for sulfide deposits in the Ducktown district. In the Ducktown-Copperhill area (Ducktown basin) sulfides of the Copperhill Formation consist predominantly of pyrrhotite (60%) and pyrite (300,6) with chalcopyrite, sphalerite, and magnetite making up most of the remainder (Magee, 1968). In the southwestern part of the district ore zones appear to be less massive than those to the northeast in the Ducktown basin. Geology The Ducktown sulfide district is located in the Blue Ridge geologic province in Georgia and Tennessee. The Blue Ridge is separated from the Valley and Ridge geologic province to the west by the Cartersville fault and from the northern Piedmont geologic province to the southeast by the Allatoona fault (McConnell and Abrarris, 1984; Fig. 2). Ores of the Ducktown district are associated with the Copperhill Formation of the Great Smoky Group. King and others (1958) defined the Great Smoky as the uppermost group within a thick metasedimentary sequence known as the Ocoee Supergroup. Hurst (1955) and Hurst and Schlee (1962) mapped units of the Great Smoky Group in the Mineral Bluff and Epworth 1:24,000topographic quadrangles and along Ocoee Gorge. In his work in the Mineral Bluff quadrangle, Hurst (1955) redesignated 1 0 0 0 85 84 83 , - , Ducktown-Copperh'ill" 1 1; . - T~NN~~~EE_ 35 oJt"-" - GEORGIA / T"" area -- - 1 / - ~~-~ -1w~- N-I1 __ 7 NORTH CAROLINA _ _ .. - -- --~-- 7 -- GEOR.. ..:.".' -:<:-~ :."" ' / - --" j- .rl. - - - Q ~ f\:-0 , / .,.----1..I ~-~- o 'I - - - -, / '" "V-'1 / \ If-...: . -- --...' ' <, ~ ' I e. ~ 7 ~ '\.-0 B ' F R A N K L I N' K 5 H A RT ~ I\) ~ ~ / ~. ' , "............... ~ I ~~ ' \ ' ' y .,.'--,~, . . /. -"\.' -- \ ' \ ~ .. _.A , ~~ I ~_,.L V ~ ' "" ~ " A / ~/ ' ' J A C K 5 0 N I y~l ) M A D IS 0 )-''\,_/ \ (I. ) \ N \ E L 8 E R T '--, -'--~-I~~"- .......n-........... .JI _...__ ., l ,'A . . ' '. \ \ -, v t -,, ~ -.. / 0 ( . _,- ' --,:.,,./ 5 C:, \..,B A R R 0 W _.\:'r- ~ ...." " _,.;.... 7..' ......... '\..s-.... . 7 . G WIN N E T T )-' .. _,.,,- '..C_L. -ARKE 1\ 0 G LET H 0 R P E, _r' ~ ---~ ... \... ,--~,,.,_,'. \ '-- -..... _ / / '"'"? 0 10 20 30 40 MILES .\.... '\, , / "- Figure 1. Location map. Epworth quadrangle is indicated. 0 0~l+il en ewn a: w ..J :1 >w :; 0 "' 0 ..J :;; ~ -- 3 m Epworth 1 :24,000, 1941 0 1000 2000 3000 4000 FEET Figure 3. Type locality of the Fightingtown Creek Amphibolite. the previously named Great Smoky Formation, the Great Smoky Group and subdivided it into the Copperhill, Hughes Gap, Hothouse, and Dean Formations. Of these the Copperhill was interpreted as the oldest formation. Rocks in the southernmost Ducktown district consist dominantly of metamorphosed flysch facies conglomerate, greywacke, and pelite. Metaconglomerates are composed of quartz and feldspar clasts, usually no greater than 1/4 inch in diameter, within a finer matrix composed predomi nantly of quartz, feldspar and biotite with lesser amounts of muscovite and epidote. Metagreywackes are equigranular and contain a mineralogy similar to that of the metaconglomerate. Both lithologies are interlayered and in most cases are gradational into one another. Graded bedding is common in the metaconglomerate. Metaconglomerate also locally grades into metagreywacke layers. Schists (metapelites) vary from graphitic to nongraphitic musco- vite-biotite schist garnet and staurolite. Near ore zones staurolite and garnet coarsen and garnets are rimmed by chlorite. Staurolite is altered to chlorite, garnet, muscovite, and quartz. Chlorite schist is common in the area, but appears to be chiefly associated with ore zones. Calcsilicate rock occurs as lenses, pods, or layers in metagreywacke. These calc-silicates consist mainly of quartz, hornblende, plagioclase and garnet, usually zonally arranged. Emmons and Laney (1926) interpreted this lithology to be metamorphosed calcareous concretions. Calc-silicates in the Ducktown basin and northern portions of the Epworth quadrangle commonly are pediform, but in the southern Epworth quadrangle the lithology is usually expressed as layers or lenses in metagreywacke. Mafic and felsic volcanic rocks are associated with and are parallel to ore zones. Felsic volcanic rocks include felsic gneiss and sericite schist. A mafic unit, herein termed the Fightingtown Creek Amphibolite (Newtown sill of Hurst, 1955) for exposures near Fightingtown Creek (Fig. 3), extends throughout the Ducktown district and is in close proximity to most recognized ore zones (Fig. 4; see detailed description in igneous rock section, this report). Metamorphism and Deformation Multiple deformation and metamorphism, up to staurolite grade (Carpenter, 1970), have affected rocks of the Ducktown district. Alteration of staurolite is common through the study area. Coarse staurolite and chlorite are best developed adjacent to ore zones, and chlorite may not only result from retrogression, but also from alteration processes associated with ore zones. Rocks trend predominantly to the northeast and dips are variable due to large scale folding. First generation folding was isoclinal and has axial planes coincident with S 1 foliation. Second generation folding is responsible for map patterns and major structures of the district. The Surra antiform and Coletown synform (Fig. 4) in the DucktownCopperhill area represent second generation folds (Holcomb, 1973; Granath, 1978). Limbs of first generation folds are transposed and ore zones lie parallel to axes and are stretched out along limbs of second generation folds. Third generation folding complicates structural interpretation and deforms ore horizons, but deformation associated with post F2folds was not intense enough to remobilize ore zones. Mineralized Areas Ore zones, as defined by mine locations and Tumbling Lead in the southwestern Ducktown district, are conformable to the surrounding rocks and occur as stratabound discontinuous lenses which extend southwestward along 4 EXPLANATION _., FIGHTINGTOWN CREEK ~ AMPHIBOLITE ----FAULT + ANTIFORM + SYNFORM ,. MINE X PROSPECT * MINERAL LOCALITY )( ------- Cu .2-6.2 * "#20 Ca .9 -3.5 Zn .5 -3.7 Jeptha Patterson x Ca 1.7-3.3 Zn 1.0-2/ ,. Mobile Cu .3-e.e Zn 1-3.3 GCAYSVR.LE x Owenby GPWORTH Cu .6-7.4 Zn .2-3.5 x Kellogg cu .4-1.3 Znl.7-6.1 x Tanner N t I "'" x Pisgah Mtn. x Polecat Base from U.S. Geological Survey Epworth 1:24,000, 1941 Figure 4. Map of the Ducktown District showing locations of mines and prospects and the Fightingtown Creek Amphibolite. Amphibolite as shown is based on surface and subsurface exposures. 5 strike from the Ducktown basin in three nearly parallel zones (Fig. 4). The southeasternmost of these zones contains the Pisgah Mountain and Tanner Prospects; the central zone contains the Mobile Mine and the Kellogg and Bryant Prospects; and the northwesternmost zone is defined by the presence of chalcopyrite, pyrite and pyrrhotite along Tumbling Lead. The three sulfide zones or "belts" are believed to result from folding and probably represent repetitions of the same stratigraphic horizon. Smaller scale folds further disrupt the continuity of ore zones. Ore/host rock relationships observed at mines and prospects are similar to those seen at Ducktown. Ore zones are surrounded by sericite and chorite schists, plagioclase-rich gneiss, actinolite/tremolite schists, and horizons rich in epidote, quartz and calcite. These lithologies are enclosed within metasediments of the Copperhill Formation. Pyrite and pyrrhotite are the most abundant sulfides present in ore zones. Pyrrhotite is greatest in abundance, followed in abundance by pyrite, chalcopyrite and sphalerite. Magnetite makes up a small portion of the ore horizon and minor occurrences of gahnite have been recognized at several abandoned mines and prospects. Alteration associated with ores is intense, but is localized in limited areas adjacent to the ore zones. Alteration zone mineralogy commonly includes large radiating masses of actinolite or tremolite with fine, disseminated pyrite and pyrrhotite, tremolite-talc schist, and/or sericite-talc schists with coarse to fine epidote, quartz and calcite. As previously stated, descriptions of sulfide deposits of the southwestern Ducktown district are few and limited in scope. LaForge and Phalen (1913) and Shearer and Hull (1918) briefly described the workings and geology at the #20 and Mobile Mines and Pisgah Mountain, Jeptha Patterson, and Sally Jane Prospects. Later, Emmons and Laney (1926) also briefly described several of the same deposits of the southwestern Ducktown district. However, in contrast to the limited nature of published reports, Tennessee Chemical Company's records show that two mines and nine prospects were worked in the southwestern Ducktown district. Tennessee Copper Company drilled many of these localities from 1920 to the 1970's. The #20 and Mobile are the only mines located in the southwest part of the district. In addition to the three prospects described by Laforge and Phalen (1913) and Shearer and Hull (1918), prospects previously not described include the Kellogg, Bryant, Tanner, Owenby, Payne, Polecat, and other unnamed prospects. #20Mine The #20 Mine (Figs. 5 and 6) has the most extensive workings of the area. Shafts, pits and trenches lie on a low ridge approximately three miles southwest of Copperhill, Tennessee. Production of copper and sulfur ores from the #20 occurred through most of the Civil War (Shearer and Hull, 1918). The mine was reopened in the late 1870's and operated sporadically until the end of 1918 (Emmons and Laney, 1926). Ores from the #20 were shipped by rail to the smelter at Copperhill until the #20 mine closed. The ore body at the #20 strikes to the northeast and dips steeply to the southeast. Ore minerals include pyrrhotite, pyrite, chalcopyrite, sphalerite and minor amounts of galena. Gold and silver are present in varying amounts. Assays from the #20 (Tennessee Chemical Company records) showed up to 4.6% copper, 3.7% zinc and .55 oz/ton silver (Table 1). Ores are disseminated to massive and appear brecciated in some samples. Shearer and Hull (1918) reported that large amounts of chalcocite or "black ore" averaging 10% copper were removed in the early stages of mining at the #20 site. LaForge and Phalen (1913), Shearer and Hull (1918), and Emmons and Laney (1926) believed ores at the #20 mine formed due to post-metamorphic replacement of limestone. McCallie (unpublished report, date unknown) interpreted the ores as deposited along fault planes in the country rock. McCallie's interpretation may have been due to the presence of chlorite and alteration of staurolite adjacent to ore zones. A northwest-southeast trending fault was interpreted to offset the ore zone at the #20 (Tennessee Chemical records). Three pits and a trench are offset from the main trend at the #20 and are located north of the major workings (Fig. 5). An alternate interpretation is that the apparent offset of the ore zone in this area is a reflection of folding of the ore horizon. Banded iron formation (exhalite) is present adjacent and parallel to the #20 ore zones. Due to metamorphism the unit is now expressed as a banded quartzite with narrow bands of sulfides (pyrite and pyrrhotite) or limonite after pyrite alternating with cherty or sugary quartz (Fig. 7). This lithology is also found in one of the three pits located north of the main ore trend. Other dump material and outcrops adjacent to the ore zones consist of sericite-chlorite schist, sericite-quartz schist disseminated sulfides, garnet-sericite schist, biotite schist, and coarse- to medium-grained tremolite, actinolite and/or cummingtonite granofels disseminated sulfides. Talc, calcite and abundant quartz are also present as gangue minerals. A zone of staurolite-bearing schist lies parallel to and structurally overlies the ore zones. Amphibolite is not present in surface exposures, but a zone of chalcopyrite and pyrrhotite bearing amphibolite was intersected in core drilled by Tennessee Copper Company at the #20 mine (Tennessee Chemical Company records, Appendix A). The ore and enclosing alteration zone are narrow in extent and are surrounded by metagreywacke and schists of the Copperhill Formation. MobiJe Mine Workings at the Mobile Mine are less extensive than 6 t EXPLANATION JV I >-------< TRENCH 0 PIT 0 DRILL HOLE ~ SHAFT ,~:::~::~.. DUMP 600 1000 FEET I I Figure 8. Map of the Mobile Mine and Jeptha Patterson Prospect (modified from Tennessee Chemical Company records) showing abandoned workings and locations of holes drilled by Tennessee Copper Company. 11 Pisgah Mountain, Bryant, Kellogg, Payne, Sally Jane, Jeptha Patterson, Tanner, Owenby, Polecat and several unnamed prospects. Many of these prospects were worked extensively and are well-preserved. The Pisgah Mountain Prospect (Fig. 9) is one of the best preserved and is located on the top of Pisgah Mountain, approximately nine miles (14.5 km) southwest of Copperhill. Shearer and Hull (1918) reported prospecting began at the Pisgah Mountain site in the 1850's and continued sporadically untii approximately 1917. Workings are extensive and consist of two partially caved adits and several shafts (one of which is flooded) and pits in metagreywacke and mica schists. Chlorite schist, staurolite, garnet and tourmaline are common in exposures in shafts and pits. The extent of the workings would seem to indicate significant ore mineralization at the Pisgah Mountain Prospect; however, no ore, either massive or ~ooo--- J I EXPLANATION !l SHAFT lf ADIT 0 PIT QUADRANGLE LOCATION urvey a 200 400 600 BOO FEET Figure 9. Map of the Mt. Pisgah Prospect (modified from Tennessee Chemical Company records) showing abandoned workings. 12 disseminated, is present at the site. Sulfide staining and a few fine grains of sulfide and gahnite are the only indication of mineralization. Shearer and Hull (1918) noted that a test shipment from the Pisgah Mountain Prospect to Tennessee Copper Company's smelter averaged 4% copper, but those authors suggest that the sample was high-graded and report no observable sulfides at the prospect. No core driDing was done at the Pisgah Mountain Prospect. The Bryant and Kellogg Prospects are located along a northeast trending ridge approximately four miles southwest of the Mobile Mine. The Bryant workings (Fig. 10) lie along the northeast end of the ridge top and consist of numerous trenches and three pits. The Kellogg Prospect (Fig. 10) lies to the southwest of the Bryant and includes eight trenches, a caved shaft and three pits located on the west flank of the same ridge. Exposures along the ridge consist chiefly of a muscovite-chlorite-quartz-plagioclase gneiss/schist which, in this report, is interpreted as an altered felsic volvanic rock. At the Bryant Prospect, float and exposures in trenches and pits include gossan, actinolite/tremolite-talc granofels chlorite, chlorite schist, tremolite-chlorite schist, chlorite-sericite schist garnet, sericite schist and muscovite-biotite-chlorite schist. Altered staurolite is common in schists and structurally overlies the ore zone. Ores observed in core from both the Kellogg and Bryant Prospects occur as both massive and disseminated sulfides of pyrrhotite, pyrite, chalcopyrite, and sphalerite (Appendix A). Rock interpreted as banded iron formation is exposed at the Kellogg workings. The banded iron formation is of two types: silicate and sulfide facies. Sulfide facies resembles the banded iron formation at the #20 Mine and is represented by a sugary quartzite with narrow bands of limonite after pyrite and fine amphibolite revealed by microprobe analysis to be cummingtonite. Silicate facies is a dense cherty quartzite with layers or clusters of fine cummingtonite. Other rock exposed as float or in trenches and pits at the Kellogg Prospect includes gossan, tremolite/actinolite granofels and chlorite-quartz-plagioclase gneiss (interpreted as a felsic volcanic). The Payne Prospect (Fig. 11) is located less than two miles south of the Kellogg on the south side of a ridge. Workings consist of only two well-developed shafts through exposures of chlorite-quartz-plagioclase gneiss/schist. The chlorite gneiss/schist at the Payne Prospect represents an extension of the altered felsic gneiss associated with the Bryant and Kellogg Prospects. No ore was observed at the Payne around either shaft, but ore zones observed in core (Appendix A) consist of disseminated pyrite, pyrrhotite, chalcopyrite, sphalerite and galena. The Payne Prospect is of particular note, as one assay yielded 3.3% lead (Tennessee Chemical Company, Table 1). No sulfide mineralization is apparent in pits and trenches at the Jeptha Patterson Prospect (Figs. 4 and 8); although, LaForge and Phalen (1913) reported small amounts of ore similar to ore from the Mobile Mine. Exposures of rock in and surrounding the workings at this site include chlorite schist coarse staurolite and garnet, and muscovitechlorite-quartz schist garnet. Drill records and core drilled by Tennessee Copper Company from 1930 to 1971 show the ore zone consists of disseminated pyrite, pyrrhotite, chalcopyrite and sphalerite. Examination of core from the Jeptha Patterson Prospect reveals that ore zones are generally associated with or bounded by altered staurolitechlorite schist garnet, sericite-chlorite-quartz schist, sericite schist, and chlorite-sericite-tremolite granofels. Country rock, which trends to the northeast and dips to the southeast, includes metagreywacke, metaconglomerate, and schist common to the Copperhill Formation. Amphibolite is exposed just to the southeast of and parallel to the workings and sulfide-bearing amphibolite was encountered in drill core interlayered or infolded with schist and metagreywacke. Exposures at the Sally Jane Prospect, like those at the Jeptha Patterson, do not appear to contain sulfide mineralization. LaForge and Phalen (1913) reported chalcocite at the Sally Jane workings (Fig. 12), but they reported no other ore. There are three pits and six trenches at the site. Staurolite schist, sericite schist and biotite-chlorite schist are exposed in and around trenches and pits. Amphibolite is exposed to the southeast approximately 200 yards from the workings. Core drilling done by Tennessee Copper Company in 1930 failed to encounter any massive or disseminated ore (Tennessee Chemical Company records; Appendix A). Three shallow pits make up what is called the Polecat Prospect (Fig. 4; Tennessee Chemical Company records). The pits are located along the north slope of a dissected ridge. Surrounding rock includes metagreywacke, sericite phyllite and biotite-muscovite schist graphite. No sulfide mineralization is visible at this site and Tennessee Chemical Company's records indicate no core drilling, geochemistry or geophysics done at the Polecat locality. The Tanner and Owenby Prospects lie southeast of the main zone of mineralization on which the Mobile and #20 Mines and other prospects are located (Fig. 4). No drilling was done at either the Owenby or Tanner Prospects. Magee (1%1, unpublished) reported that electromagnetic, self-potential, and magnetic surveys were conducted at the Tanner site in the late 1950's. As a result of these surveys a SP anomaly was recognized, but magnetic and electromagnetic surveys yielded no significant anomalies. The Tanner Prospect (Fig. 13) included two shafts, 40 and 20 feet deep, and an adit, all now caved or slumped. Magee (1%1, unpublished) described weathered and iron-stained actinolite/tremolite rock and vein quartz in one of the shafts. Exposures in the area of the prospect include chlorite-garnet-staurolite-sericite schist, sericite schist, gossan and metagreywacke. Staurolite is altered to garnet, quartz and muscovite. Local zones of tourmaline are pres- 13 EXPLANATION o DRILL HOLE >-------<. TRENCH 0 PIT Figure 12. Map of the Sally Jane Prospect (modified from Tennessee Chemical Company records) showing abandoned workings. ent in schist. The rock is folded and crenulated and the main area of the workings is located along the axis of a northeast trending fold. No sulfide mineralization is apparent at the workings. At the Owenby Prospect (Fig. 4) exposures are chiefly of a biotitechlorite-muscovite-quartz-plagioclase schist with clots of chlorite which are referred to as metacrysts in Tennessee Chemical Company records. Some small exposures of gossan are also present. Workings consist of a large cut into a massive exposure of quartz. Tennessee Copper Company at one time used local quartz for flux (Randy Slater, 1984, personal communication). The Owenby and several unnamed prospects in the area, also located in massive quartz, may have been prospected as sources of flux rather than as potential sources of sulfides. Samples collected from Tumbling Lead ridge (Fig. 4), in the northwestern portion of the study area, yielded .2 to 6.2% copper (unpublished data, Georgia Geologic Survey mineral files) . Samples were from what appear to be local zones of sulfides within interlayered metagreywacke, metaconglomerate, and schist. Rocks forming Tumbling Lead are on trend with ore bearing units at Ducktown and may make up a limb of the folded ore horizon extending from the Ducktown area. There is no historical record of 16 QUADRAN G LE LOCAT ION Base from U.S. Geolog1cal Sur vey Epworth 1:24,000, 1941 0 400 800 FEET EXPLANATION 1!1 SHAFT lr ADIT Figure 13. Map of the Tanner Prospect (modified from Tennessee Chemical Company records) showing abandoned workings. prospecting on Tumbling Lead and no pits or other workings were located on the ridge. Alteration Zones All mines and prospects of the Ducktown district are associated with some form of alteration zone. Several mines and prospects are associated with tourmalinebearing rock units and/or banded iron formation. Alteration zones vary in mineralogy, chemistry and extent. Coarse staurolite and chlorite and sericite alteration are common adjacent to ore horizons. Types of alteration include AI/Si Fe assemblages and Mg/Al + Ca assemblages. These alteration assemblages or zones have formed as a result of footwall hydrothermal alteration associated with the sulfide ore body. Regional metamorphism has further altered these assemblages to their present mineralogy, retaining those alteration products such as chlorite which are stable through metamorphism. Al/Si Fe assemblages are characterized by the presence of staurolite and/or garnet; microprobe analyses reveal Mg/AI+ Ca assemblages characterized by tremolite and/or actinolite, in addition to talc, chlorite and calcite. Coarse staurolite 17 Figure 14. Coarse staurolites from the southwestern Ducktown district. zones within schist are spatially associated with all mines and prospects of the southwest Ducktown District and with most mines in the northern part of the district. Staurolites vary from 1to 6 inches in length (Fig. 14) and are rarely twinned. They are usually partially altered and alteration to chlorite, garnet, muscovite and quartz is common. In deeply weathered areas, where alteration due to weather ing or retrograde metamorphism is extensive, it is some times difficult to recognize the completely altered stauro lites within schist. Coarse garnet occurs near ore zones of the Ducktown district and garnets up to 5 inches in diame ter have been reported from the southwest Ducktown district (Cook, 1978) on strike with known deposits. The increased abundance and size of staurolite and garnet on strike or adjacent to ore zones is significant, and these AVSi Fe assemblages represent ore zone hydrothermal alteration similar to alteration associated with mineralized zones in the northern Piedmont (Abrams and McConnell, 1984). The use of Al/Si Fe assemblages as an exploration tool was noted by Carpenter and Allard (1982). Those authors believe these assemblages are typical of footwall alteration associated with sulfide deposits. If this footwall relationship is correct, then the structural position of the staurolite horizon at the #20 and Mobile Mines and Kellogg and Bryant Prospects (overlying the ore zone) would indicate that the rock sequence, at least in those areas, is overturned. Chlorite and sericite alteration adjacent to and on strike with ore horizons is common throughout the Ducktown district. Slater (1982, p. 4) noted the importance of these zones at the mines in the Ducktown area and interpreted them as "alteration zones produced during the syngenetic deposition of the deposits as submarine exhalative brines." Drill core examination reveals chlorite and/or sericite alteration occurs in both the hanging and footwalls of many deposits of the southwest Ducktown district. The importance of magnesium-aluminum alteration zones in the Abitibi Greenstone belt was noted by Riverin and Hodgson (1980). Like Al/Si Fe rich zones, Mg/AI assemblages commonly occur in footwall alteration zones (Carpenter and Allard, 1982). Throughout the Ducktown district these zones are typically also Ca-rich and in addition to chlorite, contain tremolite and/or actinolite, cummingtonite, talc and calcite (Fig. 15). These MglAI alteration assemblages are interpreted as primary features or feeder pipes for ore bearing solutions. These assemblages are particularly well-developed at the #20 and Mobile Mines and the Bryant and Kellogg Prospects and are characterized by tremolite/actinolite granofels chlorite and talc. Iron Fonnation and Tounnaline Banded iron formation occurs locally throughout the Ducktown district, closely associated with ore deposits. In the northern portion of the district iron formation is characterized by a coarsely banded rock of quartz, magnetite, 18 Figure 15. Mg/AI alteration zone rock showing radiating tremolite. Figure 16. Banded iron formation (exhalite) from the Ducktown area. Rock contains layers of sulfides, magnetite, and quartz. 19 pyrrhotite and pyrite with accessory actinolite (Slater and others, 1985; Fig. 16). Slater (1982) interpreted this lithology as a chemical precipitate or exhalite. Iron formation in the southwest Ducktown district is less impressive in appearance and is generally a sugary to cherty quartzite with sulfide and/or cummingtonite layers (Fig. 7). Where observed in the southwestern part of the district these lithologic units are thin (less than 4 feet). The relationship of tourmaline and its importance as an indicator to ore deposits was noted by Slack (1982). No rock which can be termed "tourmalinite" has been observed in the Ducktown district, but tourmaline is associated with at least three of the prospects of the southwest Ducktown district. The Tanner, Pisgah Mountain and Payne Prospects contain tourmaline crystals, up to 1 1/4 inches in length, in and around abandoned workings. Associated Igneous Rocks Amphibolite is spatially associated with most mines and prospects of the Ducktown district. The unit, termed the Newtown Sill by Hurst (1955), is herein termed the Fightingtown Creek Amphibolite for exposures near FightingTown Creek, Fannin County, Georgia (Fig. 3). The Fightingtown Creek Amphibolite can be traced throughout the entire Ducktown district (Fig. 4) where it is folded and concordant to surrounding rocks. The unit varies in thickness from several inches to tens of feet and is composed predominantly of hornblende and andesine with accessory clinozoisite and quartz and minor amounts of chlorite and sulfides (Hurst, 1955). The amphibolite varies in texture from coarse to fine grained in the southwest part of the district, but to the northeast in the Ducktown area, the textural appearance of the unit is somewhat different and resembles a metabasalt. For this part of the amphibolite, a flow origin may be a more appropriate interpretation. Allard (1984, personal communication) recognized possible amygdyles in amphibolite samples from the area around Ducktown. Hurst (1955) favored a basalt flow origin for the amphibolite although he termed the body a "sill" and suggested that the amphibolite is chemically indistinguishable from a diabase, gabbro or basalt. Results of whole rock geochemistry of amphibolite samples from the southwest Ducktown district are presented in Table 2 (samples prefixed EP). These analyses, along with plots of trace element analyses (Fig. 17) from the amphibolite, indicate that data from the unit plot in both the abyssal tholeiite and island arc and continental margin fields. Figure 17 shows trace element plots for amphibolites of the southwestern Ducktown district in comparison to plots from metabasalts of the northern Piedmont of Georgia. These chemical analyses, along with the presence of volcanic textures, suggest that some form of volcanic activity occurred in conjunction with ore deposits in the rocks of the Ducktown district. Gair and Slack (1980) suggested a volcanic origin for certain rocks bounding the Ducktown ore bodies. In this interpretation they included chlorite-rich schists as possible tuffs, quartzite as metachert or exhalite, and amphibolite as metabasalt. Slater (1982) similarly suggested that thick zones of chlorite and sericite schist may represent metamorphosed volcanics or alteration zones. Plagioclaserich rock is known to be associated with ore bodies at the Cherokee Mine in the Ducktown area (Nesbitt, 1979); the #20 and Mobile mines; and Kellogg, Bryant, and Payne Prospects in the southwest Ducktown district. Thin section examination reveals this plagioclase-rich rock contains plagioclase and qua1tz with accessory sericite, fine sulfides and tremolite and is herein interpreted to be a felsic volcanic. Tremolite (identified by microprobe analysis) occurs as single grains or in radiating clusters. A single chemical analysis (sample from the Cherokee Mine, Ducktown area) indicates the rock closely resembles a dacite (Table 2). Samples of this lithology from the Ducktown area contain quartz eyes and features which may be interpreted as flattened pumice (Fig. 18). If the plagioclase-rich rocks, sericite schist, chlorite schist, quartzite and amphibolite all represent lithologies of volcanic origin, then there is a sizeable volcanic component associated with and hosting ores of the Ducktown district. Summary The stratabound nature of the ore bodies suggests a syngenetic origin for deposits of the Ducktown basin. The presence of mafic and felsic volcanic rocks, exhalite, and significant alteration zones in the form of Mg/AI and SVAI Fe enriched assemblages suggest a volcanic origin for ore genesis. Gair and Slack (1980), Hutchinson (1980), and Fox (1984) have suggested a Besshi model for the Ducktown area with a thick sequence of continentally derived sediments enclosing volcanics and ore. Sangster (1980) and Slater and others (1985) favor a Sullivan model characterized by thick clastic sediments with a minor volcanic component. The presence of felsic and mafic volcanics enclosing ores at Ducktown would favor a Besshi model. Whichever model best fits, deposits of the Ducktown district probably resulted from some form of volcanogenic process at a time of rifting. A more accurate model (Fig. 19) may be one which includes characteristics of both Sullivan and Besshi. The Ducktown district, like many ore districts, does not precisely fit any predetermined model. 20 Table 2. Whole rock analyses* of selected rocks of the southwesternmost Ducktown District. Sample no. Ep 150 Ep200 Ep202 Ep71 Ep206 Si02 AI:Pa Fe:P3 FeO MgO CaO Na20 K20 Ti02 MnO P:Ps LOI Total 41.61 16.90 3.69 8.60 7.92 14.80 1.11 0.14 1.75 0.25 0.23 1.34 98.34 42.85 15.17 3.88 9.04 9.30 13.41 2.70 0.20 1.52 0.20 0.19 0.88 99.34 47.75 15.62 3.15 7.35 7.10 13.44 1.60 0.13 1.47 0.18 0.16 1.63 99.58 48.43 14.51 3.66 8.54 6.61 13.09 1.27 0.23 1.88 0.22 0.20 1.24 99.88 46.25 14.34 3.64 8.49 7.95 14.16 1.62 0.36 1.49 0.26 0.17 1.09 99.82 *XRF analyses by author, University of Georgia Laboratory qz co or ab an ne di hy ol mt il ap H20/loi Total 0.83 6.48 40.72 1.58 25.30 12.90 5.35 3.32 0.54 1.34 98.36 CIPWNORMS 1.60 1.18 6.77 28.68 8.71 29.61 0.77 13.54 35.06 24.75 14.55 5.63 2.89 0.45 0.88 99.35 14.50 4.57 2.79 0.38 1.63 99.59 4.85 1.36 10.75 33.21 24.77 14.36 5.31 3.57 0.47 1.24 99.89 2.13 13.71 30.79 31.11 5.04 7.46 5.28 2.83 0.40 1.09 99.84 21 Table 2. Whole rock analyses* of selected rocks of the southwesternmost Ducktown District. (cont'd.) Sample no. Si02 Al:z03 Fei!<)3 FeO MgO CaO Na:z(> K:z(> Ti02 MnO P:zOs LOI Total Ep298 47.53 15.69 3.15 7.32 7.25 13.66 1.59 0.15 1.48 0.19 0.16 1.38 99.55 Ep298a 47.66 17.52 3.02 6.71 6.29 14.18 1.83 0.13 1.33 0.17 0.13 1.02 99.99 Felsic 72.59 8.92 1.23 2.86 2.37 4.35 3.28 0.07 0.54 0.08 0.37 1.27 97.93 qz co or ab .an ne di hy ol mt il ap H20/loi Total CIPWNORMS 0.89 0.04 0.89 13.45 35.23 0.77 15.49 39.21 25.47 14.48 24.53 11.73 4.57 2.81 0.38 1.38 99.55 4.38 2.53 0.31 1.02 100.01 41.95 0.41 27.76 9.41 7.94 5.53 1.78 1.03 0.88 1.27 97.96 22 3 0 2 0 0 PUMPKINVINE CREEK FORMATION e. HILLABEE CHLORITE SCHIST (Tull and olhers, 1978) X FIGHTINGTOWN CREEK AMPHIBOLITE 1,0 4 0 FeotMgO (wt. %) Figure 17a. Discrimination of volcanic rock types based on Ti02 vs FeO*/MgO (after Miyashiro, 1975). A=Calc-alkalic series; B=Calcalkalic and tholeiitic series; and C=Tholeiitic series (o=Pumpkinvine Creek Formation after McConnell, 1980; 1::. =Hillabee Chlorite Schist after Tull and others, 1978; and x=Fightingtown Creek Amphibolite, this report). 400 200 ~ E g 60 ~ z 40 20 0 PUMPKINVINE CREEK FORMATION t!. HILLABEE CHLORITE SCHIST (lull and others. 1978) X FIGHTINGTOWN CREEK AMPHIBOLITE FeO*/MgO Figure 17b. Discrimination of volcanic rock series based on Ni vs FeO*/MgO relationship (after Miyashiro and Shido, 1975; o=Pumpkinvine Creek Formation after McConnell, 1980; t::. =Hillabee Chlorite Schist after Tull and others, 1978; and x=Fightingtown Creek Amphibolite this report). 23 1000 900 800 700 GOO 500 400 300 200 E 0. & 0 100 90 80 70 60 50 40 f"-. / \o 0 PUMPKINVINE CREEK FORMATION 6 HILLABEE CHLORITE SCHIST (Tull and others, 1978.) ' I ' o \I\1/ -:'',.\...--- Abyssal tholollto llold I - - .-- ' I 6 \ Field ol volcan iC rocks ol island arcs I I X X X 0 6 1 i\ 6 I X 6 I ~ and ac tive continenta l margins \ \ \ \ \ I 66 \ I \ I \ 30 I I I ' ' ', ~0 \ 6 ', I I \ 10 L-----~--~~------L-----~------------------ FeO*/MgO Figure 17c. Discrimination of volcanic rock series based on the Cr vs FeO*/MgO relationship (after Miyashiro and Shido, 1975; o=Pumpkinvine Creek Formation after McConnell, 1980; t:::. =Hillabee Chlorite Schist after Tull and others, 1978; and x=Fightingtown Creek Amphibolite this report). 2.5 r- 0 PUMPKINVINE CREEK FORMATION 6 HILLABEE CHLORITE SCHIST (lull and others, 1978) X FIGHTINGTOWN CREEK AMPHIBOLITE 2.0 1-6 \ X 6~6 1.5- 6 N 0 - X6 ~ 1- 6 6 6 6 0 6 tP- 1.0 - 0 0 0 0 0 0 0 0.5- 6 DFB lKT 0.0 I I I I I 100 200 300 400 500 600 700 Cr (ppm) Figure 17d. Discrimination of ocean floor basalts (OFB) vs low potassium tholeiites (LKT) on the basis of Cr vs Ti02 (after Pearce, 1975; o=Pumpkinvine Creek Formation after McConnell, 1980; t:::.=Hillabee Chlorite Schist after Tull and others, 1978; and x=Fightingtown Creek Amphibolite this report). 24 Figure 18. Felsic volcanic rock from the Cherokee Mine, Ducktown, Tennessee. Figure 19. Generalized model for the Ducktown District. 25 REFERENCES Abrams, C.E. and McConnell, K.l., 1984, Geologic setting of volcanogenic base and precious metal deposits of the west Georgia Piedmont: A multiply deformed metavolcanic terrain: Economic Geology, v. 79, 15211539. Abrams, C.E., 1985, Base metal mines and prospects of Fannin County; Georgia: an extension of the Ducktown trend: Geological Society of America Abstracts with Programs, v. 17, no. 2, p. 77. 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Emmons, W.H., and Laney, F.B., 1911, Preliminary report on the mineral deposits of Ducktown, Tennessee in Hayes, C.W., and Lindgren, W., eds., Contributions to Economic Geology: U.S. Geological Survey Bulletin 470, p. 151-172. _ _____, 1926, Geology and ore deposits of the Ducktown mining district, Tennessee: U.S. Geological Survey Professional Paper 139, 114 p. Fox, J.S., 1984, Besshi-type volcanogenic sulphide deposits- a review: v. 77, no. 864, p. 57-68. Gair, J.E., and Slack, J.F., 1980, Stratabound massive sulfide deposits of the U.S. Appalachians, in Vokes, F.M., and Zachrisson, E., eds., Review of CaledonianAppalachian stratabound sulphides: Geological Survey of Ireland Special Paper 5, p. 67-81. Granath, J.W., 1978, Strain history and metamorphism of the Burra anticline at Ducktown, Tennessee: Southeastern Geology, v. 19, p. 231-240. Holcomb, R.V., 1973, Mesoscopic and microscopic analysis of deformation and metamorphism near Ducktown, Tennessee (Ph.D. thesis): Palo Alto, California, Stanford University, 225 p. Hurst, V.J., 1955, Stratigraphy, structure, and mineral resources of the Mineral Bluff quadrangle, Georgia: Georgia Geologic Survey Bulletin 63, 137 p. Hurst, V.J., and Schlee, J.S., 1962, Ocoee metasediments, north central Georgia-southeast Tennessee: Georgia Geologic Survey Guidebook 3, 28 p. Hutchinson, R.W., 1980, Massive base metal sulphide deposits as guides to tectonic evolution, in Strangway, D.W., ed., The Continental Crust and its Mineral Deposits: Geological Association of Canada Special Paper no. 20, p. 659-684. King, P.B., Hadley, J.B., Neuman, R.B., and Hamilton, W., 1958, Stratigraphy of Ocoee Series, Great Smoky Mountains, Tennessee and North Carolina: Geological Society of America Bulletin, v. 69, p. 947-966. Laforge, L., and Phalen, W.C., 1913, Description of the Ellijay quadrangle: Georgia-North Carolina-Tennessee: U.S. Geological Survey Atlas, Folio 187, 17 p. Magee, M., 1961, Unpublished report on the Tanner Prospect: Tennessee Chemical Company files, 3 p. _ _____, 1968, Geology and ore deposits of the Ducktown district, Tennessee, in Ridge, J.D., ed., Ore Deposits of the United States, 1933: American Institute of Mining and Metallurgical Engineers, p. 207-241. McCallie, S.W., Unpublished report on the #20 and Mobile Mines: Tennessee Chemical Company files, 2 p. McConnell, K.l., 1980, Origin and correlation of the Pumpkinvine Creek Formation: A new unit in the Piedmont of northern Georgia: Georgia Geologic Survey Information Circular 52, 19 p. McConnell, K.l., and Abrams, C.E., 1984, Geology of the Greater Atlanta region: Georgia Geologic Survey Bulletin 96, 127 p. Miyashiro, A., 1975, Volcanic rock series and tectonic setting: Annual review of Earth and Planetary Science, v. 3, p. 251-269. Miyashiro, A., and Shido, R., 1975, Tholeiitic and calcalkalic series in relation to the behavior of titanium, vanadium, chromium, and nickel: American Journal of Science, v. 275, p. 265-277. Nesbitt, B.E., 1979, Regional metamorphism of the Ducktown, Tennessee, massive sulfides and adjoining portion of the Blue Ridge province (Ph.D. thesis): Ann Arbor, University of Michigan, 238 p. Pearce, J.A., 1975, Basalt geochemistry used to investigate post tectonic environments on Cyprus: Tectonophysics, v. 25, p. 41-67. Riverin, G., and Hodgson, C.J., 1980, Wall-rock alteration at the Millenbach Cu-Zn mine, Noranda, Quebec: Economic Geology, v. 75, p. 424-444. Sangster, D.F., 1980, Distribution and origin of Precambrian massive sulfide deposits of North America, in Strangway, D.W., ed., The Continental Crust and its Mineral Deposits: Geological Association of Canada Special Paper no. 20, p. 723-739. Shearer, H.K., and Hull, J.P.D., 1918, A preliminary report on a part of the pyrites deposits of Georgia: Georgia Geologic Survey Bulletin 33, 229 p. Slack, J.F., 1982, Tourmaline in Appalachian-Caledonian 26 massive sulfide deposits and its exploration significance: Institute of Mining and Metallurgy Transactions, v. 91, sec. B, p. 881-889. Slater, W.R., 1982, Massive sulfide deposits of the Ducktown Mining district, Tennessee, in Allard, G .0., and Carpenter, R.H., convenors, Exploration for metallic resources in the southeast: Athens, University of Georgia Department of Geology and Center for Continuing Education Conference, p. 91-99. Slater, W.R., Misra, K.C., and Acker, C.P., 1985, Fieldtrip #5: Massive sulfide deposits of the Ducktown district, Tennessee, in Woodward, N.B., ed., Field trips in the southern Appalachians: University of Tennessee, Department of Geological Sciences Studies in Geology 9, p. 171-190. Tull, J.F., Stow, S.H., Long, L., and Hayes-Davis, B., 1978, The Hillabee Greenstone: stratigraphy, geochemistry, structure, mineralization and theories of origin: Mineral Resources Institute, Research Report 1, 100 p. Williams, H., 1978, Tectonic-lithofacies map of the Appalachian orogen: St. Johns, Newfoundland, Canada, Memorial University of Newfoundland, scale 1:1,000, 000. 27 Appendix A 28 CORE LOG DESCRIPTION Mine: PAYNE date drilled: April and May. 1969 hole: depth: 350' bearing: N60W 310' N62W depth (ft) 0-350 description metagreywacke and biotite muscovite-schist garnet and chlorite Cu Zn 19-20' 1.0 .1 5 298-300' .13 .76 310-31 5' .27 .36 disseminated sulfides angle: 45 23 Mine: PAYNE date drilled: May. 1969 hole: 2 depth: 400' bearing : N60W 347' N42W angle: 60 36 depth (ft) 0-400 description metagreywacke and biotite schist muscovite. chlorite. and garnet Cu Zn 37-125' .18 .26 37-85' .29 .37 37-65' .38 .27 55-65' .34 .29 disseminated sulfides 350-355' conglomeratic zone Mine: PAYNE date drilled : May and June. 1969 hole: 3 depth: 445' bearing: N60W 31 0' N67W depth (ft) 0-445 description biotite muscovite schist and metagreywacke 75' and 373' fault ? Cu Zn 45-70' 120-270' .06 .22 disseminated sulfides angle: 60 44 Mine: PAYNE date drilled: June and July, 1969 hole: 4 depth: 893' bearing: 287' 575' 880' N60W N55W N61Vv N40W depth (ft) 0-893 description metagreywacke and biotite muscovite schist 264' and 34 7' fault ? angle: 70 65 47 40 29 CORE LOG DESCRIPTION (Cont'd.) 230-580' disseminated sulfides; chalcopyrite. pyrite. pyrrhotite. sphalerite 416-440' calc-silicate; actinolite. garnet Mine: PAYNE date drilled: July and August. 1969 hole: 5 depth: 1383' bearing: 11 2' 298' 655' 914' 11 71' N60W N59W N54W N66W N72W N74W angle: 80 79 76 56 41 32 depth (ft) 0-17 1 7-21 21-68 68-90 90-105 105-122 122-269 269-290 290-989 989-1383 description overburden sericite quartzite metagreywacke and biotite muscovite schist chlorite biotite chlorite schist and quartzite metagreywacke and biotite muscovite quartz schist biotite quartzite chlorite 108-111' Cu .1. Zn .08: disseminated sulfides chloritic metagraywacke and biotite muscovite schist biotite chlorite quartzite and schist with chlorite metacrysts (staurolite pseudomorphs?) metagreywacke and biotite muscovite quartz schist chlorite and chlorite metacrysts metagreywacke and biotite muscovite quartz schist 11 76-13 70' Cu .16. Zn .66: disseminated sulfides Mine: PAYNE date drilled: January and February. 1970 hole: 6 depth: 772' bearing: 150' 450' S60E S52E S62E angle: 45 32 5 depth (ft) 0-578 578-633 633-698 698-743 743-772 description biotite muscovite quartz schist and metagreywacke metagreywacke. calc-silicate and biotite muscovite quartz schist with disseminated sulfides Cu 585-585.5' .48 585-609' .21 Zn 1.4 7 .1 7 metagreywacke. calc-silicate and biotite muscovite quartz schist chloritic metagreywacke and chlorite biotite muscovite quartz schist metagreywacke, biotite muscovite schist Mine: PAYNE date drilled: February and March. 1970 hole: 7 depth : 171 6' 30 bearing: 135' 375' 800' 1270' S60E S51E S57E S73E S77E angle: 60 52 38 10 5 CORE LOG DESCRIPTION (Cont'd.) depth (ft) description 0-31 overburden 31-1076 metagreywacke and biotite muscovite quartz schist garnet 1076-1407 metagreywacke. biotite muscovite quartz schist chlorite 1135-1145' Cu .03. Zn .12; trace sulfides 11 70' and 1290' trace sulfides 1407-1518 metagreywacke. biotite muscovite quartz schist with biotite metacrysts 1490' disseminated sulfides 1518-1525 quartzite biotite. with chlorite metacrysts 1525-1617 metagreywacke and biotite muscovite quartz schist 1617-1716 chloritic metagreywacke and biotite muscovite quartz schist 1625' disseminated sulfides Mine: PAYNE date drilled: April. 1970 hole: 8 depth: 1135' bearing: 125' 395' 740' 1120' S60E S58E S65E S80E S77E angle: 60 54 39 18 1 depth (ft) description 0-1075 metagreywacke. biotite muscovite quartz schist chlorite and garnet 571'and744' fault? Cu Zn Pb 964-964.5' .11 .22 .12 969-969.5' .43 3.02 3.32 disseminated sulfides; chalcopyrite. pyrrhotite. pyrite. sphalerite. galena. actino- lite 1075-1135 chlorite metagreywacke and chlorite biotite muscovite quartz schist garnet Mine: PAYNE date drilled: May. 1970 hole: 9 depth: 1368' bearing: 126' 262' 4 71' 588' 669' 895' 1120' S60E S54E S58E S45E S71E S51E S79E S89E depth (ft) 0-644 644-655 6 55-7 31 7 31-7 42 7 42-807 807-812 description metagreywacke. muscovite biotite quartz schist quartzite biotite metagreywacke and biotite muscovite schist quartzite. siliceous metagreywacke with trace sulfides metagreywacke. biotite muscovite quartz schist quartzite with trace sulfides angle: 70 70 66 59 54 50 26 9 31 CORE LOG DESCRIPTION (Cont'd.) 81 2-888 metagreywacke, biotite muscovite quartz schist 888-91 5 quartz metaconglomerate, quartzite with trace sulfides 91 5-1135 metagreywacke, biotite muscovite quartz schist 966-967' Cu .79, Zn .24; disseminated sulfides 11 3 5-11 50 chloritic metagreywacke. chlorite biotite muscovite quartz schist with trace sulfides 11 50-1 273 metagreywacke, biotite muscovite quartz schist 12 7 3-1 286 sericite chlorite quartz schist biotite, garnet and epidote 1286-1 368 sericite chlorite quartz schist and metagreywacke Mine: SALLY JANE date drilled: 1930 hole: 1 depth: 225' depth (ft) 0-25 25-58 58-70 70-120 120-155 155-195 195-214 214-225 description weathered overburden siliceous mica schist metagreywacke siliceous mica schist metagreywacke siliceous mica schist metagreywacke siliceous mica schist bearing: N45W Mine: SALLY JANE date drilled: 1930 hole: 2 depth: 250' bearing: N82W depth (ft) 0-40 40-45 45-70 70-175 17 5-190 190-225 225 - 230 230-250 description overburden siliceous mica schist metagreywacke metagreywacke with interlayered siliceous mica schist metagreywacke siliceous mica schist metagreywacke siliceous mica schist Mine: SALLY JANE date drilled: 1930 hole: 3 depth: 275' bearing: N35W angle: 60 angle: 60 angle: 60 32 CORE LOG DESCRIPTION (Cont'd.) depth (ft) 0-52 52-185 185-215 21 5-262 262-275 description overburden siliceous mica schist with metagreywacke layers metagreywacke siliceous mica schist metagreywacke Mine: BRYANT date drilled : 1929 hole: depth: 227' bearing : N55W angle: 60 depth (ft) 0-18 18-90 90-100 100-160 160-220 220-227 description overburden chlorite muscovite schist quartz chlorite muscovite schist and siliceous muscovite schist chlorite metagreywacke. calc-silicate. siliceous biotite muscovite schist garnet mica schist Mine: BRYANT date drilled: 1929 hole: 2 depth: 207' bearing : N62W angle : GO depth (ft) 0-11 11-55 55-75 7 5-138 138-145 145-207 description overburden weathered biotite chlorite muscovite schist siliceous chlorite schist chlorite schist tremolite chlorite schist 140-142' Cu 3 .64. Zn 0.0: chalcopyrite. pyrite. pyrrhotite. sphalerite siliceous chlorite biotite muscovite schist Mine: BRYANT date drilled: 1929 depth (ft) 0-13 13-38 38-40 40-1 25 description overburden chlorite schist quartz ve in chlorite schist hole: 3 depth: 169' bearing : N55W angle: 60 33 CORE LOG DESCRIPTION (Cont'd.) 125-134 134-139 139-143 143-169 actinolite I tremolite chlorite schist 125-130' Cu 2.26; chalcopyrite. pyrite. pyrrhotite. sphalerite. Zinc not assayed. siliceous mica schist actinolite chlorite schist 139-141' Cu 1.66; 141-143' Cu 1.36: chalcopyrite. pyrite. pyrrhotite. sphalerite. Zinc not assayed. siliceous mica schist Mine: BRYANT date drilled: 1929 hole: 4 depth: 300' bearing: N55W depth (ft) 0-19 1 9-190 190-195 195-225 225-256 256-300 description overburden chlorite biotite muscovite schist with quartz stringers vei n quartz biotite chlorite schist siliceous biotite muscovite schist and chlorite schist 255' disseminated sulfides siliceous biotite chlorite muscovite schist Cu 266-268' 1.07 268-270' 1.15 270-272' 1.68 272' 1.09 chalcopyrite. pyrite. pyrrhotite. sphalerite Mine: BRYANT date drilled: 1929 hole: 5 depth: 220' bearing: N55W depth (ft) 0-18 18-146 146-163 163-1 94 194-210 210-220 description overburden tremolite chlorite schist siliceous tremolite chlorite schist 150-160' disseminated sulfides tremolite chlorite schist siliceous tremolite chlorite schist Cu Zn 196-197' .73 .69 197-200' .53 200-202' 1.64 chalcopyrite. sphalerite. pyrite. pyrrhotite siliceous chlorite biotite muscovite schist angle: 60 angle: 60 34 CORE LOG DESCRIPTION (Cont'd.) Mine: BRYANT date drilled: 1930 hole: 6 depth: 300' bearing: N52W depth (ft) 0-35 35-1 70 170-175 175-196 196-200 200-205 205-250 250-300 description overburden chlorite schist biotite c.hlorite schist chlorite schist siliceous chlorite biotite muscovite schist chlorite schist Cu .58. Zn .14; chalcopyrite. pyrite. sphalerite. pyrrhotite siliceous chlorite biotite muscovite schist 240-250' trace sulfides metagreywacke. siliceous biotite muscovite schist angle: 60 Mine: BRYANT date drilled : 1930 hole: 7 depth: 600' bearing: 200' 300' 400' 500' 600' N50W angle: 60 47 37 29 27 25 depth (ft) 0-74 74-82 82-230 230-387 387-395 395-515 51 5-525 525-550 550-600 description muscovite chlorite schist with chlorite metacrysts. metagreywacke siliceous biotite muscovite schist. metagreywacke garnet chlorite quartz schist and siliceous metagreywacke siliceous biotite muscovite schist chlorite siliceous metagreywacke. calc-silicate siliceous biotite muscovite schist 424-431' Cu 1.35. Zn .04; chalcopyrite. pyrite. pyrrhotite. sphalerite metagreywacke siliceous biotite muscovite schist chlorite metagreywacke, calc-silicate Mine: BRYANT date drilled: 1930 hole: 8 depth: 300' bearing : N43W angle: 60 depth (ft) 0-156 156-225 description biotite chlorite muscovite quartz schist biotite chlorite muscovite quartz schist with cross biotites and quartz veins 35 CORE LOG DESCRIPTION (Cont'd.) 225-260 260-300 biotite quartz feldspar gneiss and biotite muscovite quartz schist chlorite 235-250' trace sulfides metagreywacke Mine: BRYANT date drilled : 1930 hole: 9 depth: 200' bearing: N63W depth (ft) 0-60 60-165 165-180 180-200 description overburden - altered schist siliceous sericite chlorite schist tremolite 145' and 155-1 60' trace sulfides chlorite biotite schist siliceous biotite muscovite schist angle: 60 Mine: BRYANT date drilled: 1930 hole: 10 depth: 330' bearing : N52W angle: 60 depth (ft) 0-30 30-195 195-296 296-301 301-330 description overburden siliceous biotite muscovite schist 190' disseminated sulfides chlorite schist 279-284' Cu 3.3. Zn 3.5; chalcopyrite. pyrrhotite. pyrite. sphalerite biotite muscovite schist 298' Cu 7.38. Zn 2 .12; chalcopyrite. pyrrhotite. pyrite. sphalerite. Assay from sludge. no core. siliceous biotite muscovite schist 305-325' trace sulfides Mine: BRYANT date drilled: 1930 hole: 11 depth: 300' bearing : 1 00' 200' 300' N38W depth (ft) 0-75 75-200 200-235 235-275 275-300 description weathered mica schist and metagreywacke siliceous biotite muscovite schist 180' disseminated sulfides siliceous chlorite schist 21 0-225' disseminated sulfides; pyrite. pyrrhotite tremolite chlorite schist siliceous chlorite schist. biotite muscovite schist angle: 60 57 42 38 36 CORE LOG DESCRIPTION (Cont'd.) Mine: BRYANT date drilled : 1930 hole: 12 depth: 500' bearing: N43W depth (ft) 0-40 40-186 186-233 233-425 425-475 4 75-500 description overburden siliceous muscovite biotite schist metagreywacke siliceous biotite muscovite schist and metagreywacke chlorite schist tremolite Cu Zn 460-462' .27 .03 470-472' .67 .25 pyrrhotite. sphalerite. chalcopyrite. pyrite siliceous biotite muscovite schist 496-498' Cu .64. Zn 3.46 Mine: BRYANT date drilled: 1930 hole: 13 depth: 325' bearing: N61W depth (ft) 0-50 50-85 85-128 128-132 132-155 155-207 207-240 240-279 279-325 description overburden altered siliceous biotite muscovite schist siliceous biotite muscovite schist quartz vem muscovite biotite quartz feldspar gneiss siliceous biotite muscovite schist chlorite 202-207' disseminated sulfides biotite muscovite chlorite schist chlorite muscovite quartz schist tremolite and cummingtonite 250' trace sulfides Cu Zn 267-275' 1.01 1.72 275-279' 2.30 1. 19 267-279' 1.44 1.54 chalcopyrite. pyrrhotite. pyrite. sphalerite biotite muscovite quartz feldspar gneiss angle: 60 angle: 60 Mine: BRYANT date drilled: 1930 depth (ft) 0-50 description overburden hole: 14 depth: 300' bearing : N67W angle: 60 37 CORE LOG DESCRIPTION (Cont'd.) 50-108 108-11 0 110-270 270-300 biotite muscovite quartz plagioclase gneiss I schist chlorite chlorite schist biotite muscovite quartz plagioclase gneiss I schist chlorite metagreywacke and calc-silicate Mine: BRYANT date drilled: 1930 hole: 15 depth: 500' bearing: 100' 200' 300' 400' 500' N74W angle: 60 41 21 21 23 21 depth (ft) 0-50 50-331 331-336 336-430 430-435 435-460 460-468 468-490 490-500 description overburden muscovite biotite quartz plagioclase gneiss I schist chlorite and garnet chlorite muscovite schist siliceous biotite muscovite schist chlorite metagreywacke siliceous biotite muscovite schist chlorite schist siliceous biotite muscovite schist metagreywacke Mine: BRYANT date drilled: 1930 hole: 16 depth: 254' bearing: N57W angle: 60 depth (ft) 0-53 53-198 198-204 204-224 224-254 description overburden siliceous biotite muscovite schist 160-165' Cu 2.23. Zn .79: chalcopyrite. pyrite. pyrrhotite. sphalerite ve in quartz chlorite muscovite schist siliceous biotite muscovite schist . 235' trace sulfides Mine: KELLOGG date drilled: 1930 depth (ft) 0-95 description overburden hole: depth: 220' bearing: N17W angle: 60 38 CORE LOG DESCRIPTION (Cont'd.) 95-182 182-193 193-220 siliceous biotite muscovite schist. calc-silicate 176-182' Cu .86. Zn 2.18 ; chalcopyrite. pyrite. sphalerite. pyrrhotite metagreywacke 192-193' Cu .77. Zn 2.32; chalcopyrite. pyrite. sphalerite. pyrrhotite siliceous biotite muscovite schist Mine: KELLOGG date drilled: 1930 hole: 2 depth: 200' bearing : N70W angle: 60 depth (ft) 0-80 80-200 description overburden siliceous biotite muscovite schist I metagreywacke 165-166' Cu 1.15. Zn 1.65; chalcopyrite. pyrite. pyrrhotite. sphalerite Mine: KELLOGG date drilled : 1930 hole: 3 depth: 250' bearing : N70W angle: 60 depth (ft) 0-60 60-90 90-95 95-250 description overburden siliceous biotite muscovite schist I metagreywacke biotite muscovite schist siliceous biotite muscovite schist I metagreywacke 202-205' Cu .4. Zn 2.19; chalcopyrite. pyrite. sphalerite. pyrrhotite Mine: KELLOGG date drilled: 1930 hole: 4 depth: 225' bearing: N70W angle: 60 depth (ft) 0-111 111-131 131-1 50 150-174 174-198 198-210 210-225 description overburden siliceous mica schist metagreywacke siliceous mica schist chlorite sericite schist 18 7' Cu 1.21. Zn 1.70; chalcopyrite. sphalerite. pyrite. pyrrhotite siliceous mica schist met agreywacke Mine: KELLOGG date drilled : 1930 hole: 5 depth: 250' bearing: N70W angle: 60 39 CORE LOG DESCRIPTION (Cont'd.) depth (ft) 0-121 121-151 151-209 209-235 235-250 description siliceous biotite muscovite schist metagreywacke siliceous biotite muscovite schist 194' Cu 1.27. Zn 2.04; pyrite. pyrrhotite. chalcopyrite. sphalerite metagreywacke siliceous biotite muscovite schist Mine: KELLOGG date drilled: July. 1957 hole: 6 depth: 699' bearing : N70W 300' 522' angle: 60 44 31 depth (ft) 0-477 4 77-487 487-502 502-699 description metagreywacke and interlayered biotite sericite schist garnet chlorite schist and calc-silicate quartz sericite schist disseminated and breccia ore zonequartz sericite schist with sphalerite. chalcopyrite. pyrrhotite. and pyrite 487-502' 487-490' 500-502' 495-496' 496-500' Cu .9 .36 2.26 .74 .74 Zn 2.41 6.15 2.50 5.2 1.25 biotite sericite schist and metagreywacke Mine: KELLOGG date drilled: August. 1957 hole: 7 depth: 500' bearing: N70W 300' depth (ft) 0-500 description metagreywacke. mica schist and calc-silicate 196'. 259', 374', 416' and 420' disseminated pyrrhotite angle: 60 41 Mine: KELLOGG date drilled: August. 1957 hole: 8 depth: 570' bearing: N70W 395' N80W 405' N73W depth (ft) 0-570 description metagraywacke. mica schist garnet and calc-silicate 145' trace chalcopyrite and pyrrhotite angle: 75 35 35 Mine: KELLOGG date drilled: August. 1957 hole: 9 depth: 538' 40 bearing : N60W 290' angle: 60 43 CORE LOG DESCRIPTION (Cont'd.) depth (ft) 0-260 260-353 353-538 description metagraywacke. calc-silicate and mica schist garnet metagraywacke. calc-silicate and chlorite biotite muscovite schist garnet metagreywacke. calc-silicate and mica schist garnet 455'. 461'. 491' and 516' trace pyrrhotite Mine: KELLOGG date drilled: August and September. 1957 hole: 10 depth: 572' bearing: N73W 410' N74W depth (ft) 0-502 502-530 530-572 description metagreywacke. mica schist and calc-silicate biotite muscovite quartz schist ore zone- pyrrhotite. pyrite. sphalerite. chalcopyrite Cu 516.5-519' .15 519-522.5' .38 Zn 1.95 metagraywacke. mica schist and calc-silicate Mine: KELLOGG date drilled: September. 1957 hole: 11 depth: 1400' bearing : vertical 164' N44W 463' N84W 921' N71W depth (ft) 0-438 438-448 448-638 638-77 9 7 79-1400 description metagreywacke. mica schist. calc-silicate chloritic metagreywacke. chlorite biotite muscovite schist metagraywacke. mica schist. calc-silicate chloritic metagraywacke. chlorite biotite muscovite schist metagreywacke. mica schist and calc-silicate 1336' metadiabase with trace sulfides Mine: KELLOGG date drilled: October and November. 1957 hole: 12 depth: 1262' bearing: 400' 900' 1255' N70W N73W N81W N76W depth (ft) 0-235 235-282 282-7 23 723-726 description metagreywacke. mica schist. calc-silicate chloritic metagraywacke. chlorite muscovite schist metagraywacke. biotite muscovite schist metadiabase angle: 80 51 angle: 90 86 70 41 angle: 85 61 35 27 41 CORE LOG DESCRIPTION (Cont'd.) 726-7 56 756-760 7 60-7 6 7 767-768 768-1190 11 90-1 203 1203-1262 muscovite biotite schist metadiabase muscovite biotite schist metadiabase metagreywacke. mica schist. calc-silicate biotite muscovite quartz schist 1196-1197' Cu .04. Zn .42; pyrite. pyrrhotite. sphalerite. chalcopyrite metagreywacke. mica schist Mine: KELLOGG date drilled: November. 1957 hole: 13 depth: 304' bearing : N70W angle: 60 depth (ft) 0-304 description chlorite sericite quartz schist 157'. 291' and 303' trace sulfides Note by R.Siater in log book- hole is mislocated on file map. actually is on northwest side of hill. Mine: JEPTHA PATTERSON date drilled : 1930 hole: depth: 250' bearing: 11 0' 150' 190' N45W depth (ft) 0-60 60-195 195-213 213-218 218-250 description overburden siliceous mica schist I metagreywacke muscovite chlorite schist chlorite schist Cu 1.17. trace Zn; chalcopyrite. pyrite. pyrrhotite. sphalerite muscovite chorite schist angle: 60 64 63 60 Mine: JEPTHA PATTERSON date drilled: 1930 hole: 2 depth: 200' bearing: N50W angle: 60 depth (ft) 0-65 65- 148 148-160 160-180 180-200 description overburden siliceous mica schist chloritic siliceous mica schist 160' Cu 1.7 2. Zn .3 5; chalcopyrite. pyrite. pyrrhotite. sphalerite chlorite schist I chlorite tremolite chlorite muscovite schist 42 CORE LOG DESCRIPTION (Cont'd.) Mine: JEPTHA PATTERSON date drilled: September. 1970 hole: 3 depth: 737' bearing : 136' 346' 675' N40W N46W N43W N50W angle: 70 67 57 47 depth (ft) 0-33 33-270 270-375 375-407 407-421 421-428 428-443 443-462 462-555 555-611 611-622 622-737 description overburden metagreywacke and mica sc:hist chloritic metagreywacke and muscovite schist garnet 332-346' disseminated sulfides metagreywacke and sericite schist chlorite sericite schist chlorite sericite quartz tremolite schist Cu Zn Au 425-428' 3.25 2.06 .02 421-428' 1.7 1.03 chalcopyrite. pyrite. pyrrhotite. sphalerite chlorite sericite quartz schist chlorite quartz schist chlorite sericite quartz schist chlorite sericite quartz schist with metagreywacke interlayers muscovite quartz schist I metagreywacke chlorite sericite quartz schist I metagreywacke 6 70-6 71' Cu .06. Zn .1; chalcopyrite. sphalerite. pyrite. pyrrhotite. quartz Mine: JEPTHA PATTERSON date drilled : September & October. 1970 hole: 4 depth: 440' bearing: N40W 326' N41W angle: 70 61 depth (ft) 0-50 50-137 137-140 140-160 160-307 307-322 322-361 361-381 381-440 description overburden metagreywacke I mica schist metagreywacke and garnet mica schist staurolite chlorite schist garnet (staurolite altered) sericite chlorite quartz schist 204-21 0' Cu .14. Zn .06; disseminated chalcopyrite. sphalerite. pyrite. pyrrhotite sericite quartz schist metagreywacke chlorite and chlorite sericite schist 322' and 345' trace sulfides metagreywacke chlorite and chlorite sericite schist metagreywacke and mica schist 43 CORE LOG DESCRIPTION (Cont'd.) Mine: JEPTHA PATTERSON date drilled: October 1970 hole: 5 depth: 511' bearing: N40W 417' N48W depth (ft) 0-8 8-18 18-78 78-1 17 117-211 211-297 297-437 437-442 442-511 description overburden metagreywacke and mica schist metagreywacke and chlorite sericite schist metagreywacke and staurolite sericite chlorite schist garnet metagreywacke and sericite schist 149' trace sulfides metagreywacke and chlorite sericite schist metagreywacke and sericite schist 402' trace sulfides conglomeratic metagreywacke metagreywacke and schist chlorite and sericite angle: 70 46 Mine: JEPTHA PATTERSON date drilled: October & November. 1970 hole: 6 depth: 986' bearing: N40W 300' N45W 800' N61W angle: 70 56 31 depth (ft) 0-134 134-352 352-415 415-4 72 4 72-659 659-862 862-986 description overburden metagreywacke. biotite muscovite schist metagreywacke. biotite chlorite sericite schist chlorite sericite tremolite schist 41 5-419' Cu .89. Zn. 7; disseminated chalcopyrite. sphalerite. pyrite. pyrrhotite chlorite sericite schist biotite with metagreywacke layers 579' and 607' disseminated sulfides biotite muscovite schist I metagreywacke biotite sericite chlorite quartz schist Mine: JEPTHA PATTERSON date drilled: November. 1970 hole: 7 depth: 670' bearing: N40W 212' N49W 620' N55W depth (ft) 0-71 71-345 345-441 441-452 452-4 78 description overburden biotite muscovite schist. metagreywacke biotite chlorite muscovite schist. metagreywacke 392' fault? conglomeratic metagreywacke biotite chlorite sericite quartz schist and metagreywacke 44 angle: 60 50 28 CORE LOG DESCRIPTION (Cont'd.) 4 78-526 526-670 biotite sericite quartz schist and metagreywacke biotite muscovite schist and metagreywacke 557' and 571' trace pyrrhotite Mine: JEPTHA PATTERSON date drilled: December. 1970 hole: 8 depth: 1 100' bearing: N40W 320' N44W 770' N52W depth (ft) 0-785 785-797 797-848 848-855 855-1100 description biotite chlorite sericite schist and metagreywacke 581' and 739' trace sulfides garnet biotite chlorite sericite schist biotite chlorite sericite schist and metagreywacke 838' trace sulfides garnet biotite chlorite sericite schist biotite chlorite sericite schist and metagreywacke 865-866' trace sulfides 894-967' disseminated sulfides 982' trace sulfides 1086-1 093' disseminated sulfides angle: 60 44 28 Mine: JEPTHA PATTERSON date drilled: February. 1971 hole: 9 depth : 1 51 7' bearing : 245' 440' 681' 968' S40E S34E S33E S35E S40E angle: 50 54 50 43 34 depth (ft) description 0-64 overburden 64-938 biotite chlorite quartz schist and chlorite biotite quartz feldspar gneiss (metagreywacke) 938-991 amphibolite with epidote biotite 991-998 biotite quartz schist and siliceous metagreywacke epidote and hornblende 998-1010 amphibolite 1010-1239 metagreywacke and biotite muscovite quartz schist 1239-1241 amphibolite with disseminated sulfides 1241-1255 1255-1 288 1288-1307 metagreywacke. mica schist. calc-silicate amphibolite 1255-1260' disseminated sulfides biotite schist. metagreywacke hornblende 1290' disseminated sulfides 1307-1332 amphibolite with disseminated pyrrhotite 1332-1336 siliceous metagreywacke 45 CORE LOG DESCRIPTION (Cont'd.) 1336-1363 amphibolite with disseminated pyrrhotite 1363- 1371 siliceous metagreywacke, calc-silicate 1371-1382 amphibolite 1382- 1399 siliceous metagreywacke, calc-silicate 1399-1404 hornblende gneiss 1404-1409 mica schist I metagreywacke 1409-1422 amphibolite 1422-1432 metagreywacke 1432-1441 amphibolite 1441-1 446 metagreywacke 1446-1476 amphibolite 147 6-1 51 7 metagreywacke, mica schist Mine: JEPTHA PATTERSON date drilled : March, 1971 hole: 10 depth: 1922' bearing: 82' 182' 295' 604' 954' 1212' 1650' N40W N28W N37W N44W N44W N48W N55W N55W depth (ft) 0-82 82-1 90 190-1495 1495-1573 1573-1662 1662-1753 17 53-1 838 1838-1922 description overburden amphibolite metagreywacke, mica schist chlorite sericite quartz schist and metagreywacke metagreywacke, biotite muscovite schist chlorite sericite quartz schist and metagreywacke 1724-1 72 7' graphite Cu Zn 1675-1680' .08 . 12 1680-1 685' .09 .08 1700- 1710' .07 .08 17 1o- 172o .1 . 1 2 1720-1725' .08 . 12 1725-1730' .06 .10 disseminated sulfides chlorite quartz schist I metagreywacke sericite biotite muscovite schist I metagreywacke angle: 80 84 82 78 65 58 45 29 46 CORE LOG DESCRIPTION (Cont'd.) Mine: #20 date drilled: May, 1930 hole: depth: 200' depth (ft) 0-30 30-160 160-165 165-170 170-200 description overburden siliceous biotite muscovite schist 140-145' trace sulfides metagreywacke siliceous biotite muscovite schist metagreywacke and calc-silicate 173' trace sulfides bearing: N57W Mine: #20 date drilled: 1930 hole: 2 depth: 175' depth (ft) 0-55 55-139 139-149 149-153 153-165 165-17 5 description overburden biotite muscovite quartz schist chlorite schist 143' trace sulfides biotite muscovite schist 152' trace sulfides metagreywacke and calc-silicate biotite muscovite schist bearing: N40W Mine: #20 date drilled: June. 1930 hole: 3 depth: 231' bearing: N33W depth (ft) 0-18 18-1 50 150-170 170-205 205-211 211-220 220-225 225-231 description overburden siliceous mica schist biotite mica schist quartz within schist; quartz bands; disseminated sulfides mica schist- biotite and chlorite talcy chlorite schist 21 0' trace sulfides amphibolite. trace sulfides talcy chlorite schist. trace sulfides metagreywacke with interlayered mica schist angle: 60 angle: 60 angle: 60 47 CORE LOG DESCRIPTION (Cont'd.) Mine: #20 date drilled: 1930 hole: 4 depth: 21 0' bearing : N45W depth (ft) 0-75 75-95 95-210 description saprolite. altered schist biotite muscovite quartz schist metagreywacke and biotite muscovite quartz schist angle: 60 Mine: #20 date drilled : June. 1967 hole: 5 depth: 752' bearing: N30W 300' N40W 720' N44W angle: 60 24 10 depth (ft) 0-87 87-267 267-561 561-622 622-752 description overburden chlorite sericite quartz gneiss chlorite biotite metagreywacke sericite schist and chlorite biotite metagraywacke 593-600.5' ore zone: chalcopyrite, pyrite. pyrrhotite. sphalerite 596' 599' 593-600.5' Cu 1. 53 1.15 1.45 Zn . 5 1.22 .64 Au trace trace Ag trace trace metagreywacke. calc-silicate and biotite-sericite set-list garnet 665' fault? 6 77' disseminated sulfides Mine: #20 date drilled: June. 1967 hole: 6 depth: 883' b.earing : vertical 143' N67W 326' N57W 455' N61W 604' N52W angle: 90 84 68 53 28 depth (ft) 0-295 295-410 410-550 550-750 750-785 785-883 description metagraywacke. biotite muscovite quartz schist chlorite and calc-silicate metagreywacke biotite muscovite quartz schist and calc-silicate 340' fault? metagraywacke. chlorite biotite muscovite quartz schist calc-silicate biotite sericite quartz schist 758-774' ore zone: mainly chalcopyrite and pyrrhotite Cu Zn Pb Mo Ag 758-774' 1. 14 1. 12 763-771' 1.46 1.03 .095 .02 .3 metagraywacke and biotite muscovite quartz schist 48 CORE LOG DESCRIPTION (Cont'd.) Mine: #20 date drilled: July. 1967 hole: 7 depth: 802' bearing: vertical 180' N58W 424' N52W 800' N40W depth (ft) 0-542 542-556 556-802 description metagreywacke and biotite I chlorite sericite quartz schist seritization increasing with depth ore zone: chalcopyrite and pyrrhotite 542-556' 547-551' Cu 1.57 1.94 Zn .91 1.03 Au trace trace Ag trace trace metagreywacke and biotite I chlorite sericite quartz schist seritization decreasing with depth 632' and 743' fault gouge angle: 90 84 56 35 Mine: #20 date drilled: August. 196 7 hole: 8 depth: 598' bearing: vertical 300' N47W 590' N47W depth (ft) 0-480 480-488 488-499 499-522 522-546 546-598 description interlayered metagreywacke and sericite schist 201' +chlorite siliceous metagreywacke siliceous sericite schist 493-499' disseminated sulfides siliceous metagreywacke and schist 499-508' disseminated sulfides massive sulfides: pyrrhotite. chalcopyrite. sphalerite. magnetite 522-527' 527-532' 532-537' 537-542' 542-546' Cu .73 1.97 .65 1.27 1.06 Zn 1.28 1.74 .40 .44 1.64 metagreywacke and sericite schist angle: 90 71 51 Mine: #20 date drilled: September. 1967 hole: 9 depth: 800' bearing: vertical 300' N21W 600' N32W angle: 90 74 60 depth (ft) 0-800 description chlorite sericite quartz schist biotite and chlorite metagreywacke 13' fault ? 411' tremolite or actinolite 49 CORE LOG DESCRIPTION (Cont'd.) 429' calcite 433-434' actinolite 580-586 .5' Cu .33. Zn .78; pyrrhotite. chalcopyrite. sphalerite. quartz. chlorite 588-621' calc-silicate in metagreywacke 650' one foot of quartzite Mine: #20 date drilled: September. 1967 hole: 10 depth: 582' bearing: verticql 150' N23W 300' N45W 340' N37W depth (ft) 0-394 394-418 418-431 431-442 442-502 502-582 description biotite chlorite sericite quartz schist and metagreywacke 83-85' fault chlorite sericite schist chlorite schist 418-430' Cu .34. Zn .14. Au trace. Ag trace quartzite biotite chlorite quartz schist Cu Zn 489-490' .24 .49 495-500' .51 .53 500-502' .47 .43 metagreywacke and schist chlorite angle: 90 83 79 74 Mine: #20 date drilled: October. 1967 hole: 11 depth: 900' bearing: vertical 31 0' N29W 630' N41W 900' N43W depth (ft) 0-900 description metagreywacke and schist (sericite. chlorite) 249' quartz conglomerate 555-569' 555-556' 568-569' Cu .67 3.5 1.0 Zn 1.00 3.7 2.2 Mine: #20 date drilled: November. 1967 hole: 12 depth: 955' bearing: N30W depth (ft) 0-133 133-144 description metagreywacke and biotite quartz schist chlorite graphitic schist angle: 90 77 62 48 angle: 80 50 CORE LOG DESCRIPTION (Cont'd.) .144-955 metagreywacke and schist chlorite with interlayered quartzite 862-895' chlorite metacrysts 945' disseminated sulfides Mine: #20 date drilled : January. 1968 hole: 13 depth: 1240' bearing: vertical 300' N38W 600' N58W 900' N52W 1200' N58W angle: 90 87 68 42 23 depth (ft) description 0-227 metagreywacke and biotite sericite schist 173' fault? 22 7- 1032 metagreywacke. biotite sericite quartz schist chlorite 240-317' disseminated sulfides 344' fault? 371-375' disseminated sulfides 1032-1038 quartz and pyrrhotite 1038-1 090 seritized metagreywacke and sericite schist 1090-1106 ore zone : chalcopyrite. pyrrhotite. pyrite. sphalerite. galena. tremolite. quartz. minor biotite Cu 1090-1106' 1.53 1100-1106' 1.96 Zn 1.71 1.15 11 06-1 240 siliceous metagraywacke Mine: #20 date drilled : February. 1968 hole: 14 depth: 991' bearing : vertical 300' N65W 600' N60W 880' N52W angle: 90 79 63 40 depth (ft) 0-925 925-991 description metagreywacke and sericite schist chlorite and quartz 251 '. 821 '. and 914' faults? metagreywacke and sericite schist biotite and quartz 929-934' Cu 1.89. Zn .85: predominately pyrrhotite with chalcopyrite. sphalerite. pyrite; sericite and sericite quartz biotite breccia Mine: #20 date drilled: March and April. 1968 hole: 16 depth: 1463' bearing : 300' 770' 975' 1320' S30E S86W S70W S68W S71W angle: 87 87 45 33 27 51 CORE LOG DESCRIPTION (Cont'd.) depth (ft) 0-1 05 105-645 645-655 655-1463 description metagreywacke and biotite sericite quartz schist metagreywacke and sericite quartz schist chlorite 177'. 356'. and 420' faults? graphitic schist metagreywacke and sericite quartz schist biotite. chlorite disseminated sulfides Cu Zn 1175-1210' .11 .29 1418-1443' .3 .33 Mine: #20 date drilled: April and May, 1968 hole: 17 depth: 1595' bearing: 300' 600' 875' 1200' S30E S68W N62W N74W N79W angle: 85 87 70 42 26 depth (ft) 0-1 595 description metagreywacke. biotite sericite schist chlorite and quartz 94' and 130' staurolite 414' fault? 567-587' amphibolite 625-627'. 630-636'. and 668' disseminated sulfides 762' fault? 1533-1 554' biotite sericite schist. calcite. pyrrhotite. and chalcopyrite Cu 1151-1554' .46 1554-1 564' 2.6 1564' calc-silicate Zn .73 1.29 Mine: #20 date drilled: June and July. 1968 hole: 18 depth: 1787' problem at 645'- too flat hole. restarted at 400' bearing: 294' 600' 640' 400' 450' 500' N90E N16W N42W N30W S26W N44W N44W depth (ft) 0-934 934-1140 1140-1 787 description metagreywacke and chlorite sericite schist 258' fault 717' graded bedding metagreywacke and biotite sericite quartz schist metagreywacke. biotite sericite quartz schist chlorite angle: 84 84 44 41 83 72 67 52 CORE LOG DESCRIPTION (Cont'd.) Cu Zn 1745-1748.5' 1.1 6 .43 1748.5-1751 2.25 1.34 disseminated sulfides; pyrrhotite. chalcopyrite. sphalerite. pyrite. quartz. calcite Mine: #20 date drilled: September and October. 1968 hole: 19 depth: 1899' bearing: 225' 362' 542' 825' 11 00' 1408' 1800' N90E N80E N22E N30W N37W N42W N51W N50W depth (ft) description 0-1689 metagreywacke and sericite schist chlorite 1689-1709 sericite schist 1709-1 71 8 pyrrhotite. pyrite. chalcopyrite. sphalerite. quartz. sericite. biotite Cu 1709-1712' 1.33 1712-1718' .34 Zn 1.12 .68 1718-1899 metagreywacke and calc-silicate angle: 85 86 85 80 59 47 30 30 Mine: #20 date drilled: November. 1968 hole: 20 depth: 821' bearing: 270' 530' 821' N70W N69W N65W N62W depth (ft) 0-655 655-721 716-821 description metagreywacke and biotite muscovite schist chlorite 246-250' disseminated sulfides metagreywacke and graphitic biotite muscovite schist 713-71 6' disseminated sulfides metagreywacke and chlorite muscovite schist angle: 80 71 57 45 Mine: #20 date drilled: February, 1969 hole: 21 depth: 1353' bearing: vertical 210' N64W 594' N60W 909' N74W 1353' N78W depth (ft) 0-81 5 81 5-869 description metagreywacke and biotite chlorite muscovite schist chlorite sericite schist tremolite and epidote. diopside? disseminated sulfides 53 angle: 90 82 68 53 36 CORE LOG DESCRIPTION (Cont'd.) 869-993 993-131 9 131 9-1353 metagreywacke and schist with chlorite and/or biotite metacrysts metagreywacke and biotite muscovite schist 1 183' fault metagreywacke and chlorite muscovite schist Mine: #20 date drilled: March. 1969 hole: 22 depth: 121 2' bearing: vertical angle: 90 depth (ft) 0-1089 1089-11 07 1107-1130 1130-1141 1 14 f-1 21 2 description metagreywacke and chlorite sericite I muscovite schist with chlorite metacrysts 55-65'. 343'. and 91 7' faults muscovite schist metagreywacke and chlorite sericite I muscovite schist with chlorite metacrysts ore zone: actinolite. quartz. calcite. diopside (?). muscovite. chalcopyrite. pyrrhotite. sphalerite. galena Cu Zn Pb Au Ag 1130-1135' 1.98 2.4 .28 trace trace 1130-1141' 1.10 2.14 .31 trace trace metagreywacke and chlorite sericite I muscovite schist with chlorite metacrysts Mine: #20 date drilled : April. 1969 hole: 23 depth: 1422' bearing: 160' 254' 469' 794' 1085' N15W N21E N14W N35W N46W N51W angle: 88 85 84 75 56 46 depth (ft) 0-465 465-4 7 5 4 75-1422 description chloritic metagreywacke and schist with chlorite metacrysts graphitic biotite muscovite schist chloritic metagreywacke and schist with chlorite metacrysts 1405-141 0' Cu .32. Zn .2; disseminated pyrite. pyrrhotite. sphalerite. and chalcopyrite Mine: #20 date drilled: May. 1969 hole: 24 depth: 16 57' bearing : 127' 213' 377' 607' 954' 1305' S60E S60E S83E N06E N15E N54E N56E angle: 87 85 86 83 75 62 50 depth (ft) 0-1 6 57 description chloritic metagreywacke and chlorite muscovite quartz schist with chlorite metacrysts 54 CORE LOG DESCRIPTION (Cont'd.) 567-604'. 857-862'. 930-935' disseminated sulfides 1562' actinolite rosettes; no chlorite metacrysts below this depth 1621-1624' biotite muscovite schist breccia ore zone: quartz. actinolite. cite. chalcopyrite. biotite. pyrrhotite. sphalerite Cu Zn 1624-1657' 1.13 1.35 1624-1630' .1.94 1.55 metagreywacke and calc-silicate underlie ore Mine: #20 hole: 24A date drilled : July. 1969 depth: 1746' casing on hole 24 pulled and NX core started again at 607' bearing: 763' 916' 1196' 1566' N29W N40W N48W N52W angle: 72 68 61 50 depth (ft) description 607-1676 chloritic metagreywacke and chlorite muscovite quartz schist 618'. 827' 920'. 979'. and 1512' faults? 1022-104 7' +chlorite metacrysts 1063-1135' +chlorite metacrysts 1261-1338' +chlorite metacrysts 1347-1363' +chlorite metacrysts 1497-1 523' +chlorite metacrysts 1590-1 596' +chlorite metacrysts 1676-1701 ore zone. breccia ore with quartz. muscovite. biotite metacrysts. pyrrhotite. chalcopyrite. actinolite. garnet. sphalerite bands. zoisite (?) associated with biotite muscovite quartz schist. actinolite is very coarse Cu 1672-1701' .72 1691-1701' .98 Zn 1.24 2.33 1701-1746 chloritic metagreywacke and schist with calc-silicate Mine: #20 date drilled: July, 1969 hole: 25 depth: 2236' bearing: vertical 21 00' N56W angle: 90 29 depth (ft) description 0-1 998 chloritic metagreywacke. chlorite biotite muscovite schist chlorite metacrysts 652-658' and 740-761' disseminated sulfides 1998-2007 actinolite in chloritic biotite quartz schist 2007-2205 chloritic metagreywacke and chlorite biotite muscovite quartz schist 2052-2064' disseminated sulfides 2190-2205' chalcopyrite. pyrite. sphalerite. pyrrhotite Cu Zn 2190-2205' .83 .57 2190-2195' 1.23 2190-2195' 1.28 2205-2236 sericite biotite quartz schist 55 CORE LOG DESCRIPTION (Cont'd.) Mine: #20 date drilled: October and November. 1969 hole: 26 depth: 2684' bearing : S60E 250' vertical 1950' N48W angle: 87 90 36 depth (ft) description 0-824 metagreywacke and mica schist with chlorite metacrysts 824-935 muscovite quartz schist. chlorite metacrysts (altered staurolite?) biotite and chlorite 935-946 garnet muscovite quartz schist biotite and chlorite 946-958 actinolite chlorite schist 958-2123 metagreywacke and mica schist with chlorite metacrysts 2123-2145 biotite quartz schist. muscovite biotite quartz schist chlorite and calcite 2145-21 6 7 quartz. tremolite. actinolite. calcite. zoisite. chlorite. garnet 2167-2180 biotite quartz schist sericite 2123-2180' disseminated and massive sulfides: chalcopyrite. pyrite. pyrrhotite. sphalerite 21 23-21 80' 2167-2180' 2145-2150' 2150-2155' 2155-2161 ' Cu 1.20 2.08 6.9 2.57 1.1 5 Zn .69 1. 1 1 .29 1.02 .70 2180-2230 biotite sericite quartz schist. metagreywacke and calc-silicate 2230-2555 metagreywacke and biotite muscovite schist with chlorite metacrysts 2377-2389' disseminated sulfides 2555-2622 graphitic biotite muscovite schist and metagreywacke 2622-2684 metagreywacke. biotite muscovite quartz schist chlorite metacrysts 2679-2684' disseminated sulfides Mine: #20 date drilled : March and April. 1970 hole: 27 depth: 1986' bearing : 21 7' vertical 676' N54W 937' N45W 1290' N44W 1650' N45W 1970' N50W depth (ft) 0-436 436-531 531-661 661-732 732-1040 description metagreywacke and muscovite I sericite quartz schist biotite chloritic metagreywacke. chlorite sericite quartz schist metagreywacke. sericite quartz schist biotite 639-650' disseminated pyrite. pyrrhotite chloritic metagreywacke and chlorite sericite quartz schist metagreywacke. sericite quartz schist biotite angle: 90 90 75 64 53 44 37 56 CORE LOG DESCRIPTION (Cont'd.) 1040-1271 chloritic metagreywacke and chlorite sericite quartz schist 1271-1880 metagreywacke. sericite quartz schist biotite 1880-1 91 2 ore zone: disseminated sulfides 1880-1 91 0' in sericite quartz schist biotite; 1910-1 914' chalcopyrite. pyrite. sphalerite. actinolite. and rounded quartz 1904-1912' 1910-1912' Cu .92 2.02 Zn .66 1.19 191 2-1986 chloritic metagreywacke with disseminated pyrrhotite and abundant calc-silicate Mine: #20 date drilled: May. 1970 hole: 28 depth: 2326' bearing: 100' 156' 296' 474' 776' 1066' 1446' 1846' S60E S60E S60E N64W N72W N71W N60W N65W N63W angle: 87 90 90 85 80 75 64 49 39 depth (ft) description 0-586 586-905 chloritic metagreywacke and chlorite mica schist 905-1322 metagreywacke and mica schist chlorite 1322-1332 hornblende chlorite biotite schist 1332-1446 metagreywacke and muscovite biotite schist 1446-1 961 chlorite metagreywacke and chlorite sericite quartz schist 1961-21 69 metagreywacke and sericite quartz schist biotite 2169-2198 chloritic metagreywacke and chlorite sericite quartz schist 2198-2207 biotite sericite quartz schist with disseminated sulfides chlorite and graphite 2207-2215 ore zone: chalcopyrite. sphalerite. pyrite. pyrrhotite. quartz. tremolite. calcite. ser ic ite 2207-2216' Cu.79.Zn.70 2215-2224 biotite sericite quartz schist and disseminated sulfides 2224-2245 metagreywacke and chlorite sericite quartz schist. disseminated sulfides 2245-2256 biotite quartz sericite schist chlorite and disseminated sulfides 2256-2265 ore of chalcopyrite. sphalerite. pyrite. pyrrhotite. tremolite. quartz. calcite. biotite Cu Zn 2256-2265' 1.25 .84 2260-2265' 1.67 .80 2265-2293 metagreywacke and mica schist chlorite. sericite 2293-2307 sericite schist chlorite 2307-2326 chloritic metagreywacke and schist 57 CORE LOG DESCRIPTION (Cont'd.) Mine: #20 date drilled: June. 1970 hole: 29 bearing : SE depth : abandoned at 683' depth (ft) description no ore all metagreywacke with interlayered mica schist chlorite angle: 87 Mine: #20 date drilled: July, 1970 hole: 30 bearing: vertical depth : abandoned at 545" depth (ft) description no ore metagreywacke and mica schist chlorite angle: 90 Mine: #20 date drilled: August. 1970 hole: 31 depth: 121 6' bearing: N60W angle: 86.5 depth (ft) 0-746 746-752 752-1216 description metagreywacl