I. c. 14 
S TAT E DI VI S I 0 N C F C 0 NS E RV~ T I 0 N D E P A R T M E N T C' F J:.t1 I N E S, H I N I N G A N D G E C L C' G Y 
425 STATE CAPITOL 
 
Garland Peyton Director 
INFC RM~ TIC'N CIRCULAR 14 
D C L C M I T E S :~ N D M ;l G N E S I A N L I I.! E S T C N E S 
I N GECRGIA 
 
 
'l. 
I 
 
By A. S. Furcron 
 
June, 1942 
 
 STATE DIVISION OF CONSERVATION DEPARrMENT OF MINES, }:liNING AND GEOLOGY 
425 STATE CAPITOL ATLANTA, GEOIDIA DOLOHITES AND 1IAGNESIAN LIMESTONES I N GEOIDIA~~ 
By 
A. s. ;Furcron 
INTRODUCTION Dolomites and magnesian limestones are wide-spread in Georgia but the principal deposits occur in Palezoic rocks of the northwestern part of the State, and in the Whitestone-Marble Hill Belt. This article will discuss very briefly the general location of these rocks. A thorough discussion of the distribution and location of the deposits may be found in the references he~e included, and in the files of the Georgia Department of ~D.ne s, Hining and Geology. Numerous che mical analyses are in our files. Typical analyses of Georgia dolor,utes will be given here. 
DEFINITION OF DOLOMITE The mineral dolomite (Ca,IJg)co3, when pure, contains 47.9 per cent carbon dioxide (C02), 30.4 per cent lime (CaO), a1n 21.7 per cent magnesia (1~0). In terms of carbonates, this represents calcium carbonate (Caco3), 54.35 per cent, and magnesium carbonate (MgCOJ), 45.65 per cent. Commercial dolomite, however, cannot be expected to be as pure as the above formulae indicate. Our dolomites occur in thick beds interlayered with other forms of stratified rock; they vary in composition with locality and with the formations involved. The per cent magnesium carbonate also exhibits a wide range, so that it is possible to have gradation from pure 
~~ 
' Revised and reprinted August, 1944. 
 
 2 dolomite to magnesian limestone and marbles, or to high calcium lirnestohe and marbles which contain very little magnesium carbonate. 1bstof the rocks. described in this article are magnesian limestones and dolomitic limestones rather than true dolomites. 
Dolomite may be difficult to distinguish from limestone in the field. 1Nhere cold dilute hydrochloric acid is applied to the limestone, a vigorous effervescence takes place . Dolomite does not effervesce under similar conditions, although an examination with hand lens usually reveals a few bubbles of carbon dioxide izmnediately after the acid is applied to the stone. 
In the Gainesville Belt, blue mar~l es are low in magnesia; whereas, the light gray stone is usually dolomit~c. In the'White st.one-1~rble Hill ~elt, the white, compact, fine-grained stone is usually dolomite. Pink or coarsely crystalline marbles a r c generally l ovT in magnesia. 
USES OF DOLOMITE At the pres ent time dolomit e in Georgia is used mostly as ground agricultural liJ:lc. A considerable anount is ground and s old by Willingham.-Little Stone Company of Whitestone, Georgia, and by tho Ladd Lime and Stone Company at Cartersville. The farmers are using more and more ground dolomite upon their land, where it serves to sweeten the soil and make plant f ood available; the magnesia content also adds an element essential t o the plant 's well-being. Certain plants, f or example, t obacco, require considerable maenesia. In order to meet Federal r equirements, farmers who cooperate with the Department of Agriculture are requir ed to use limestone or dol omit e which contains a calcium carbonate equivalent of at least 90 per cent. The calcium carbonate equivalent of a limestone represents the number of pounds of pure calcium carbonate required t o produce t he same amount of neutralization as one hundred pounds of material. F~r example, if the calci um carbonate equivalent 
 
 .3 
 
of a dolomite or lirnestone i s 85, one hundred pounds of that limestone has the 
 
same neutralizing value as 85 pounds of pure calcium carbonate. The Caco3 content of the rock may be determined by multiplying CaO content by 1.7847; 1~0 
 
may be convert ed t o MgC03 if multiplied by 2.0914. 
 
The Willingham-Little Company at Whitestone in addition to the above 
 
products, markets terraz~o chip aggregate and aggregate for cast stone. The 
 
whiteness of the Whitestone dolomite renders it especially applicable to such 
 
uses. The fine dust from the dolomite at Whitestone is sold as an asphalt 
 
I 
 
' 
 
filler, and considerable crushed stone is sold as aggregate for road and co~ 
 
crete vmrk. Some of this stone is used for fluxing material at the Atlantic 
 
Steel l~lls in Atlanta. lunong other uses for dolomite may be mentioned furnace 
 
lining, glass ronufacture, mortars and plasters, and chemical uses. Dolomite 
 
from Pickens County was extensively used in Atlanta as a source of carbon 
 
dioxide for carbonated water and soft drinks . It was preferred to limestone 
 
because Epson salts (1~S04 o7H2o) could be recovered as a by-product. Later 
 
development in the production of carbon dioxide has rendered this process more 
 
or loss obsolete. 
 
Siliceous limestones and nnrbles are suitable for the manufacture of 
 
rock wool. Such rocks should contain around 40 to  65 per cent combined .car- 
 
bonates . Too much magnesia makes the glass too viscous. Experiments carried 
 
out in the laboratory of the State Division of Mines, Mining and Geology by 
 
W. C. Hansard show that ma.gnesia content from .3 to 10 per cent is favorabie 
 
f or t he manufacture of rock wool. Dolomite or limestone may be combined sue- 
 
cessfully vdth gr~nito waste, fullers earth, slate, shale, etc., in rock wool 
 
manufacture~ 
 
Since we entered the war there has been renewed interest in dolomite 
 
. as a possible source of magnesium salts. Dolomite suitable for such uses 
 
 4 
should be pure and should contain a high percentage of magnesium carbonate. For exan~le, the ferrosilicon method of producing metallic magnesium recently has revived interest in dolomites which ~re applicable to that process. 
Several proposed methods for producing magnesium salts and possibly 
the metal are: (1) Selective calcination of dolomites whereby only the mag- 
nesium carbonate is decomposed and subsequently dissolved away from the calcium carbonate. (2) Treatment of dolomites with calcium chloride solution whereby magnesium replaces the calcium to produce a magnesium chloride solution from which the metal may be extracted by electrolysis of the fused anhydrous salt. 
DISTRIBUTION OF DOLOMITE 
Tho Piedmont and Crystalline areas of the State contain several marble belts within which dolomites arc found. 1vbgnesian limestone and dolomite occur in the Gainesville nurble belt where outcrops may be found from Flower,y Branch in Hall County northeastward through Habersr,am County to the South Carolina line. The marbles of this belt vary considerably vdth locality. In some places, they are schistose and contain considerable silica; in other localities they are dolonlitic but the blue micaceous limestones of the belt usually are low in magnesia. These marbles Yrere burned for lime before and after Civil War times. 
An .important marble belt enters Georgia in Fannin County in the region of 1lineral Bluff and extends southward east of Blue Ridge, Cherrylog, Ellijay and Talona in Gilmer County; T~lking Rock, Jasper and Tate in Pickens County to the vicinity of Canton in Cherokee Countyo An .isolated occurrence may be found in Haralson County near the Alabama line. In the vicinity of Tate and Harble Hill, famous for the production of Georgia marble, the stone is frequently high in calcium and low in magnesium. In the vicinity of Whitestone, dolomites crop out and are extensively used for agricultural and other 
 
 5 
purposes l'.Iagnesian limestones and dolomites are comhlon in the Paleozoic areas 
of nol:"thwest Georgia (S& geologic map of Georgia)~ Shady dolom1te of Lower Cambrian area is medium-grained, coarsely 
crystalline dolon;itc which cropa out near the eastern borders of the Pale~z.Oi.c nreo.. Exposur~s are uncom.'Tlon and occupy small areas  MJ~h of the fornn tion is covered by residual soil. 
The most wide-spread dolomite, the Knox dolomite (Oznrkian-Ordovician) is thick-bedded, gray dolomite which yields after vteathering large amounts of gray chert in small and large mass es Good out-crops of unweathered dolomite are not cornon but, because this f orm<ltion is ve~J thick and vndespread, numerous fresh exposures may be f ound in the regionli For example; rocks may be studied in Bartow County, principally on the highway bet"vmen Cartersville and Rome. Ge ed exposures occur just west of Kingston: Other eXposures might be list~d; such as in the region of Graysville, Cat oosa County; the north side 
of Mill Creek on the T. A. G. railroad at Kensington, Walker County, etc. 
Go od oxposureg occur at a quarry ope rated by the Ladd Lime and Stone Company, two Diles southwest  of Cartersville, Georgia. Knox dolomite occurs vri th other . highly f ol ded rocks. Its thickness has not been accura tely determined. In the Rome area, Hayes1:.Q/believed that the for~ro.tion is between 4000 and 5000 feet thick. 
Certain facies of the Chickamauga lir:1estonc of Ordovician age contain considerable rngncsia locally; and Fort Payne chert of Mississippian age is l ocally nearly all limestone or dolomite; but the principal and -most widespread deposits of dolomite occur stratigraphically in and below the Knox d ol omi t e . 
 
 6 Magnesian limestones occur in the Coastal Plmn area of Georgia, These deposits are described in the final section of this article. 
DOLOMITES AND MAGNESIAN MARBLES IN. THE CRYSTALLINE ROCKS OF GEORGIA 
THE GAINESVILLE MARBLE BELT 
Outcrops of marble in this belt are known from the vicinity of Flowe~J Branch in Hall County northeastward into South Carolina near the StephensHabers~m county line, 
Since the marbles of this belt have not been described in other publications a.nd since the belt occurs in crystalline rocks far removed from other sources of lime, the individual deposits will be described in greater detail than deposits of certain other sections of the State. 
Outcrops are found in the valleys or in the valley walls of the streams . On the uplands, marble is not found, probably because the soluble constituents have been weathered out. The marbles consist of gray dolomite and magnesian limestone, blue marbles aDd calcareous schists . They show more or l oss mica and fre e silica in the form of quartz, which tend to lower the carbonate ccntont. The marbles are interlayored with mica schist, phyllites and quartzite, tlnt dip usually at steep angles toward the southeast. 
Hc1.rb1es h2.ve been burned for lime at a number of places along the belt, particularly ncar Gainesville in Hall Ccunty and along Panther Creek in Habershai71 County. 
 
 7 Description of Outcrops 
Gray marble crops out along a branch just east of the highway at Flowery Branch in Hali County. Shallow test pitting indicates a width of 125 feet or more; the marble was cored to a depth of 100 feet in 1941, at which depth the bit was still 1n marble. 1~rble has been reported along the branch above and below this locality. 
M~rble was quarried in the past just south of GainesviJ~e, near Chicopee, in Hall County, on the east side of the Southern Railroad. These quarries are poorly exposed at the present time. According to Maynarct_/, the limestone or marble strikes N. 77 E. and dips 10 to 200 to NW. Two quarries were opened 
at this locality by the c. Lo Deal 1nnufacturing Company. Based on the two 
analyses given by Maynard, this stone averages 29.01 per cent CaO, 17.02 per cent MgO, and 10.51 per cent Si02 
Several outcrops of blue and gray marble occur upon the property of Wo 0 o Ramsey j_n Hall County, two miles southeast of White Sulphur Springs  Marbles occur along the stream about one-half mile N. 350 west of the dwelling house. Coarse, granular micaceous narble occurs in a large cliff where it is separated from other marble outcrops to the east by sandstone and biotite gneiss~ A blue non-magnesian marble crops out in the nose of th e hill immediately across a small branch from the dwelling house. An analysis of this blue marble shows: 79.54 per cent CaC03, 3.26 per cent MgC03, and 16.91 per cent insoluble residue. These limestones have been used as sources of lime in the past.  
Dolomitic marble is associated vdth talc in the property of w. M. 
Ramsey, six miles northeast of Gainesville near White Sulphur Road. Testing on the nnrble deposit by R. Lo Harris in 1941 indic~ted a width of 150-200 feet of marble with 5-30 f eet of overburden. The deposit is said to extend through 
 
 8 the property for a distance of one-half mile. A sample of light gray, compact, 
fine-grained marble contains a calcium carbonate equivalent of 77.74 per cent. 
Marble is more wide-spread in this belt than surface outcrops indicate. A nell r ecently dug on the property of M. G. Reynolds, one-half mile southeast of Airline School on the Vfuite Sulphur Springs to White Sulphur Station road, revealed a blue crystallinelimestone or marble near the bottom of the well, 
and 100 feet below the surfaceo Only 1nica schists can be found in the surface 
outcrops at this locality. Outcrops of marble and calcareous schist re-occur in the bolt at the 
Hall-Habersham county line to the west. Also, blue crystalline limestone and schistose limestone crop out with a "lvidth of several hundred yards near an old grist mill and in the rapids and falls of rfud Creek. The bods dip 150 to 300 
south 50 east. Ana.lysis of this stone shows ll.75 per cent calcium carbonate, 
6.58 per cent magnesium carbonate and insoluble residue, chiefly silica, of 
67.99 por cent. This analysis indicates calcareous schist rather than a marble, 
but tho rock is difficult to sample and is weathered on the outcrop. I:!:J.rble crops out on the land of M. Parson, two and one-half miles 
west of Alto, Narramore District, on the r oad crossing Little !.fud Crook, Hall County. Tvfo samples of this rock collected by R. L. Harris showed a calcium 
carbonate equivalent of 68.60 and 67.73 per cent respectively. 
A rock occurs in Hall County on Little ~rod Creek about four miles from Yonah Station. This property is also known as th~ Old Van Herran property. 
The stone shows calcium carbonate content 53.18 per cent, magnesium carbonate 1.59 per cent, and insoluble residue, chiefly silica, 40.47 per cent. Three samples of narble from the property of George Colbert, Alto, Route 1, collected by R. L. Harris, gavo a calcium carbonate equivalent of 52.80, 54.72 amd 74.12 
per cent respectively. Some trenching was done on the property in tho early 
 
 9 
part of 1942. Tv1o beds of ma rble , each 100 feet or more wide, a re reported from this property. 
t~rble crops out upon the property of J ohn Crawford on either side of the road to Toccoa, east of the highway near Hollywood. Light gray, creamcolored siliceous marble beds about 40 feet thick crop out in a branch in the woods on the north side of the highwayo The stone is massive and strikes northeast-southwest. About one-third of a mile from the dwelling, and u,)uthwest of the above locality, and south of the highvmy, there is another outcrop of the nBrble. This s tone is said to ha.ve been burned before the Civil War, and the remains of the old kiln still stand s at this l ocality. 1:.P.alysis of dol omite fron tte Crawford property shorrs CaO 20.30 percent, MgO 10.47 per cent, Si02 21.33 per cent; CaC~j equivalent 81.7 per cent . 
1any outcr0ps of marble and calcareous schist occur in Habershan County, Georgia, along Panther Creek southwest of Pulaski. Harbl e v;as burned on the old Walker place. The quarry has been abandoned for sometime. The marble dips southeastward into the hill at the base of the quarry but the l owermost beds are overlain Ydth r ock debris. The upper beds in the quarry c onsist of mica s chist and leached calcareous schist. The Billy Walker quarry was described and sampled by Ihynard_..!. His s ample contained 22 , 88 per cent 
CaO, 18.88 per cent !.~go, and 5.'74 psr cent Si0'2o 
Harble occurs on t!1e Will Ellard prop nrty on Panther Creek riear the junction of Panther Creek and Devil's Den Crook. 'I.'ha r-e~inR of the old quarry 
and kiln l'llDY be seen. Maynard_/ desc ribes a propo;~.-r,y one-i'our+.h of a r:d.le s outh 
of tho mouth of Little Panther Creok o Thia outer'))) ; .-as net seEom by tho writer but, according to the description, it should be c~.ose to or on the Ellard. property. Maynard states that massive magnesian l imestone is exposed ov8r a 
 
 10 stratigraphic thickness of at least 61 feet along the southeast side of Little Panther Creek, and about one-fourth of a mile south of its mouth. An analysis 
of this stone gave 27.04 per cent CaO, 15.22 per cent Mgo, and 17.38 per cent 
Si~~ 
IIBrble is said to occur on the Davidson property on Panther Creek about half-way between Ellard's property and the South Carolina line. It occurs again at the Savannah River near Pulaski. 
It is likely that a careful search will reveal other outcrops in this belt. 
Geologic Age 
The geologic age of these marbles is not known. In some localities, such as the Ramsey property in Hall County, this rock could be called a limestone although it is entirely crystalline. On the Geologic Map of Georgi~, these roc~are in the Brevard schist of lower Talladega and probable pre-cambrian age. 
DAHLONEGA MARBLE BELT There is marble in the Ashland schist belt east of Dahlon~ga and southwest of that locality. This belt cannot now be described adequately because of a scarcity of outcrops and lack of detailed field work. Commercial marble has not been discovered in the belt which ;vill be mentioned here briefly. Numerous cores from Findley Cut near Dahlonega indicate that marble and calcarepus schists have been injected by gold-bearing quartz veins and stringers in that locality. Captain Garland Peyton reports the occurrence of white, crystalline marble in the Dog Head vein at the nprtheast end of the Barlow Cut. larble has been reported from Battle Branch !tine. J. H. Long of 
 
 
 ]JL 
Dawsonville reports the occurrence of limestone or marble below Barrettsville and just south of Auraria. It is als o found near the Kin Mori Wdnes. Bluebanded, micaceous, impure marble and schist cross the Atlanta-Dawsonville Highway about 3 o2 miles south of Dawsonville . 
The age of the Ashland schist has not been determined with certainty. 
It is mapped as pre-Cambrian. W  
1NHITESTONE-MARBLE HILL BELT 
The Mur phy marble belt extends in Georgia from the vicinity of Svreetgum and 1tineral Bluff near the North Carolina line, s outhward to a point several miles north of Canton in Cherokee County. 1~rble occurrences are f ound at numerous places along this belt which f orms a large letter 11811 as it crosses Fannin, Gilmer and Pickens counties, extending nearly to the middl e of Cheroke e County. The marble lies east of a major thrust-fault which extends across the State. ~arbl e is mapped in Fannin and Gilmer counties as occurring between the above mentioned overthrust and a second overthrust to the west12/o According to Bayley_2/, the ~rble grades into calcareous and quartzos e schist (Andrews schist). 
rhrble is found along the belt just east of Sweetgum and between Sweetgum and Mineral Bluff; it .occurs east of l!i.neral Bluff and Blue Ridge, where it f0rms a continuous outcrop between these locations. Another outcrop is found about f our miles northeast of Ellijay. ~,19-rble also occurs from the vicinity of Talona southward to the Pickens County line. Occurrences of marble are more or less contirruous from a point east of Jasper in Pickens County southward nearly to Canton in Cherokee County.. These marbl es vary considerably 
 
 12 are in composition, some of themjalmost all calcium ca~bonate and others contain as much as 43 per cent magnesium carbonate. According to Bayley_2/no suitabie sections in the district have been found which illustrate adequate relations of high mae-nesium to low oagnesium beds, He believes that these beds are interlayorod. It is significant that the bolt of white talc associated with the Murphy narbles of North Carolina extends into this section of Georgia where nu~orous occurrences of talc arc found to be asso?iated vdth magnesian marbles. Dolomitic Marble in Haralson County. - A marble belt several miles long occurs several miles north of Buchanan in Haralson County. Outcrops are found . in valleys. The deposit is mapped as U1rphy marble on the State Geologia:: Map1.2/. Tho width and total extent of the deposit is not known but it probably is of considerable size. Some shallow test pitting was dono in 1940 upon the 0. B. Sanders property, Land Lot 1122, District 20, Section 3 Several pits disclosed narble at shallow depths beneath the flc.or of the valley. Dolomite was replaced by pyrite in the Tallapoosa or Waldrop hunc, 
Land Lot 932, District 20, Section 3, in the northeast corner of Haralson 
County W. Analy~is of the rock gave 28.88 per cent CaO, 19.05 per cent MgO, 
and 2.67 per cent Si02 and insoluble. 
Geologic Age 
Lack of fossils have made it difficult to determine the geologic age of this dolomitic marble. Bayley~~has placed -it in the upper part of the series of rocks exposed in the belt which he believes is of Cambrian age. The State Geologic tfup of 1939 places the lrurphy marble in the upper portion of the Talladega series of probable pre-Cambrian age. 
 
 13 
DOLOi :.ITES AND MAGNESIAN LI MESTON1!S OF PALEOZOIC AGE IN NORI'HWEST GEORGIA 
 
Shady Dol omite 
 
This formation of a round a thou sand f eet in thickness lies above the 
 
basal Cambrian Wei sner quartzi te and underlies t he Rome shale; it represents 
 
the first ma j or break in the deposition of clastic Paleozoic sediments. Sur- 
 
, 
 
f ace out crops are practically limited to Bartow County where the f ormation 
 
crops out on the eastern linfu of the Cartersville-Rome syncline . The forma- 
 
tion is not known in other localities. 
 
Outcrops of Shady Dolomite are rare; for this rea.son the rock thus 
 
far, has been unimportant as a source of dolomite. 
 
Knox Dolomite 
 
The most wide- spread exposures of Knox dolomite occur in Bartow, Polk, Floyd and Gordon counties. In this section, the dolomite is preserved in a broad syncline where surface outcrops attain a width of 10 to 15 miles in Polk, Fl oyd and Bartow counties . Typical exposures of this rock occur between Cartersville and Ro~e, where light gray soils are filled with fragments 
of chert. Just west of Kingston on u. So Highway 411, there is a very good 
outcrop of Knox dol omite. Fresh outcrops of this rock are unco~~on. Near the Tennessee line in northwestern Georgia, the Knox dolomite 
is much f olded with other r ocks . Surface exposures occur on the west or dovmthrovm side of overthrust faults. 
A belt of this formation extends through Chattooga, Walker and Catoosa counties wher e i t attains a width of at least six tliles but, in Cllra.ttooga, its t otal exposure is greater becau~e there t he belt i~ divided into two parts by synclinal and dmm-faulted areas of younger- rock1.2/ 
 
 14 A major anticlinal area of Knox dolomite extends into Georgia from Tennessee to the regi on between Rossville and Kingston in Catoosa and Walker counties. 1\vo other areas crop out in Whitfield and r.nrray counties. The Knox dolomte is the most ;'fide-spread dolomitic forr.ation in Georgia. It c ~mtains ccnsidorable chert l ocally which accounts for the high silica content of sone analyses. The f ormation occurs as massive beds of gray to bh1e~ ,. gray dol omite. Fresh unweathered chert is usually dark gray in color but weathers to light gray fragments which are scattered throughout the soil The quarries of the Ladd Lime and Stone Company, two miles southwest of Cartersville, Bartcw County, have been v10rked f or !l'.any years. The s tone is hard, er ay t o lis ht gray dolomite belonging t c the upper part of the f ormation. The quarry is opened in t he side of a small mountain v;hich attains a hei3ht of m'"lre than 300 feet above the .surr-Junding territory Brantly12./ lists the f ollowing physical properties f or the st cne: 
Specific eravity and por osity of Knox dolomite at Ladd 1s quarry Gravity Porosity 
Dark Stone ... .... ...... ... . . 2,81  0.51 Light stone,  2.81  0.55 
The quarry was originally openec f or the manufacture of line. The stone has been crushed and sold as gr ound lir.~stonc, aggregate, ballast, furnace . lining, etc. 
Lime .has been burned on a large scale at and r10ar Gr aysville v.-here Knox dolow~te and Conasauga limestone are exposed in sever al large quarries. 
 
 15 
ChiCkamauga Formation 
 
This limestone ~~s named from exposures along Chickamauga Creek east 
 
of Chattanooga, Tennessee, and also upon the Ringgold quadrangle in northwest 
 
Georgia~ The original formation. has been broken up into several formati ons but 
 
the present term is entirely suitable to the purposes of this paper. As origi- 
 
.. 
 
nally used it applies to rocks which lie between the Knox dolomite and Rockwood  
 
formation of upper,. middle and lower Ordovlcian age.. Numerous belts of tlus 
 
formation occur in northwest Georgia. Several varieties of r ocks are included 
 
in the formation, such as blue f ossiliferous limestone, earthy limestone, shales 
 
and conglomerate. Gray magnesian limestone is interlayered with the blue, high 
I 
calciur,l beds. 
 
Licht blue, heavy massive limestone of Chickamauga age is interlayered 
 
with calciun lirJ.estones in the quarry of the Southern States Portland Cement Company near Rockmart in Polk County. According to }~ynarct_2/, two beds of this 
 
material, 6 feet and 27.4 feet in thickness, are discard~d in the quarry. Beds 
 
of dolomitic limestone also occur in a quarry that was operated by tho Portland 
 
Cenent Conpany in Polk County, at Portland, Georgia. 
 
HAGNFSI AN LIHESTONES OF THE COASTAL PLAIN AREA. 
 
Tru~ dolomites are ver,y scarce or absent in the Coastal Plain area, but nagnesian linestones have been discovered particularly in the extreme southern part cf the State near the Florida line. J,bst of the known l ocalities occur in Decatur, Grady, Thomas, Brooks and Echois counties. 
J.~ost of the known outcrops of magnesian limestone in this terrain are ascribed to the Chattahoochee formation of the lower Miocene age.. A 
 
 16 
prominent belt, although narrow, of this limestone extends northeast and southwest, east of the Flint River from the region of Sylvester to the junction of the Flint and Chattahoochee rivers in the extreme southwest corner of the State. 
A further examination of the rocks of this belt should revca[ additional deposits of magnesian limestone. The combined carbonate content of these rocks is usually less than 90 per cent and will average, perhaps, 75 to 85 per ce~t , This is because the silica content is frequently rather high. These rocks would be entirely satisfactory for the manufacture of rock wool. Many of the outcrops, however, would produce excellent agrt cultural limo and, since these occur far r emoved from other magnesian limestones or ~olomites, they must be considered as a valuable natural resource~ Frequently the limestones here mentioned crop out in sinks. 
 
 17 ANALYSES OF THE DOLOMITES AND MAGNESIAN LIMESTONES IN GEORGIA 
 
DOLOMITES AND MAGNESIAN LD.:!ESTONES OF THE GAINESVILLE BELT 
 
Table 1 Sample No. 
Moisture at 100C Loss on ignition Soda (na2o) Lime (CaO) 1~gnesia (MgO) 
o Alumina (Al2 3) 
Ferric oxide (Fc2o3 ) Ferrous oxide (FoO) Manganous oxide (MhO) Titanium dioxide (Ti02) Sulphur trioxide (S03) Phosphorus pentoxide (P205) 
 
1 
 
2 
 
3 
 
4 
 
5 6 
 
7 
 
.. . .. . ....... ...... ... ~ 
 
... ;rJ.09 
 
 
 
... 36.60 40.62  33.59  
 
,.  
 
...... ....   
 
   .,  
 
27.04 30.93 28.88 25.27 28.70 28.00 30.02 
 
9.70 18.58 18.88 11.42 9.91 16.06 17.98 
 
5.65 1.60 
 
.60 
 
( 
( 
 
2.20 
 
(~ 
( . 
 
o.so 
 
o.6o 
 
2.42 2.40 1.20 
 
1.25 1.70 
 
.. . . .62    :. oeeoe  
 
o               
 
.oo         
 
.oo  .02   tr. 
 
.o2 
 
tr.   .04    .04 .o6 
 
Carbon dioxide (C0;2) 
& org. mat. 
Si..lica (Si02) 
Insoluble residue 
Undetermined 
 
..... .    44.64    .39.65 42.79 
 
18.35 
 
5.74  28.27 14.20 6,83 
 
  7.12  25.38    
 
   2.05 .32   
 
TOTAL 
 
100.38 101.25 100.00 100.00 100.00 100.00 100.,00 
 
1. Limestone, Panther Creek, Habersham County. 2. Marble. Habersham County, U.S. Government. Old quarry on Little 
Panther Creek and County Road. 3. Dolomite. Habersham County. W. L, Walker property (Billy Walker) two 
and one-half miles south of the mouth of Panther Creek along the southeast side of the Turnerville public road~. 
4 Gray marble. Hall County. Ncar White Sulphur Station, one mile southeast of the old railroad bed. 
5. Marble (Drill core). Hall County. Flowery Branch. 6 and 7. Limestones. Hall County. Deal Line Works. Two miles south of 
Gainesville, ncar Southern Railroad _2/. 
 
 lS DOLOMITES AND MAGNESIAN LIMESTONES OF THE WHITESTONE-MARBLE HILL BELT Table 2 
 
Sample No. 
 
1 
 
2 
 
3 
 
4 
 
5 
 
6 
 
7 
 
1bisture at l00C 
 
  .30 40     
 
Loss on ignition Soda (Na2o) 
 
45.SO 45.72 43.14 45.94 3?.0S 
  ..... ..... ~ ..... ..... 
 
Potash (K20) Lime (CaO) 
 
                  
31.61 32.56 32.6S 33.12 32.07 32.16 24.07 
 
Magnesia (MgO) 
 
21.06 16.63 17. 24 18.10 17.33 19.10 17.24 
 
Alumina (Al2o3) .. 
Ferric oxide (Fe2o3) 
FeFTous oxide (FeO) M9.nganous oxide (1'In0) 
Titanium dioxide Crio2 ) Sulphur trioxide (so3) 
 
( 
 
  
 
 7S 
 
( 
 
 
 
.oo  .25 
 
tr. .so( .94  (' 
 
     1.11 .56 .os    
 
  
 
.12    
 
    .oo    
 
 
 
 eee 
 
.oo  ct  
 
Phosphorus pentoxide (P2o5)    tr      
 
Carbon dioxide (co2 ) Silica (Sio2 ) Undetermined 
Total insol in HCL 
 
              0  
 
1.01    6.38 1.90  
 
       
 
 5.94 3.87 
 
......     
 
TOTAL 
 
100.95 99.86 99.77 100.34 99.96 99.90 100.58 
 
1. Marble. Gilmer County. Holt property which joins the Whitaker property. 
Outcrops at various places about the junction of Big and Little 'furniptmm crecks_2/. 
2 and 3. Ihrble. Pickens County. Lincoln Quarry near Jasper. 4. Marble. Pickens County. Tate, Georgia, 
5. Marble. Pic}wns County. Coggins Harble Company. 
6. 1-A'arble. Pickens County. Coggins i;1arble Company. Carter-Tate property near Jasper 
7. Marble. Cherokee County. Thickness of 15 feet along the east side of Lo~ 
Tovm Croek at a point about seven miles northwest of Canton and about one-half mile nort:1 of tbe junction of Lost Town and Shoal Creeks_; 
 
 19 
 
OOLOHITES AND MAGNESIAN LHIESTONES OF THE WHITESTOfTE-1tlARBLE H[LL BELT 
 
Table 2 (Continued) Sample No. 
 
8 
 
9 
 
10 
 
ll 
 
12 
 
13 
 
Moisture ~t 100C Loss on ignition Soda (Na20) Potash (K~tJ) Lime (CaO) 
 
.02               
 
  ~fl. 
 
36.74 19.66  
 
.... .. .. ......     e  ~  
 
   
 
,         
 
,   
 
33.62 34.58 33.74 37.50 5!3.00 
 
30.96 
 
Magnesia (V.gO) 
Alumina (Al2o3 ) Ferric oxide (Fe2o3) 
 
18.18 15.80 16.65 15.60 17.94 
 
18.37 
 
..... ( ( ( ( ( ...... 
 
( 1.46 (1.40 (l.S.S (1.)..6 ( 1,)15 
 
.38 ( 
 
( 
 
( 
 
( 
 
Ferrous oxide (FeO) Manganous oxide (HnO) Titanium dioxide (Ti02) 
 
       0 0           
 
 
 
     
 
  
 
  
 
   
 
Sulphur trioxide (so3) 
 
.oo 
 
Phosphorus pentoxide (P2o5)    
 
Carbon dioxide (CeQ) 
 
44.72 
 
.oo 
tr.  
 
.oo .oo 
.01 tr. 
  
 
.oo 
tr.   
 
 
    
 
   
 0  
 
6.15 8.58 
 
5.86 
 
Undetermined 
Total insol. in HCL TOTitL 
 
       
 
 
 
2.59 .  ..  .  ..  99.51 100.00 100.00 100 . 00 100.00 100.00 100.07 
 
8. M9.rble . Whitestone. Dense, flinty white marble, mined as a source of 
magnesium salts. Interbedded with coarse- grained white marble, at a quarry about one mile south of railroad station, at Whitestone, Gilmer County._1/ 
9, 10, 11 and 12. Marble, Pickens County. Whitestone Marble Company. Property located at r.Thitestone directly on the Louisville and Nashvill e railr-Jad. _2./ 
13. I.hrble. Pickens County. llhitestone Marble Company. Property located on Louisville and Nashville railroad at 1'!hitestone . This is an average analysi s of throe strata in the mine._2/ 
14, !f.arble. Pickens County. Whitestone . ;rercantile Company, Vlhitestone, Ga. 
 
 20 
 
DCLO.li'I'ES AIID M.'.GNESIAN LIUESTOJES CF THE WHITESTC'NE-Ic1'd1BLE HILL BEI"T 
 
Table 2 (Continued) S2..:1p1e No. 
Moi~ture at 100C Loss on i gnition S oc~a (Na2 c) Potash (K2C) Li::to (Ca0) (Mr;C) T,,' ,aenes~a 
 
15 
 
16 
 
17 
 
18 
 
19 
 
20 
 
21 
 
..,.. 54 .60  30 o02 
 
0  
 
.05 .07 44.61 1+5.80  43.35 40.09 
 
      o       
 
....   
 
" oooee       
 
32.90 33 . 60 34.68 32.68 31.00 32.04 34.30 
 
16.90 17.16 16.10 17.23 20.54 18.00 17.02 
 
Alu:.1ina (Al2C3) 
Fe rric Cxido (Fc2C'3) Fcrr'1US cxi c.:o (FcC) I'Eanganous (:t1nC) Titanim1 c:ioxide (TiC2 ) Sulphur trioxi de (SC3) 
 
.so 
 
   
   0. 
  
   
 
1~18 
( ul.56 
....   
. .... .    
  eo  .0. It. 
   .oo 
 
  00 
.25 .56 .07 
.... "' 
 0 _0   
 
 ( 
( .79 
 
1 rlr}( eOO( 
 
1.96 
 
   
 
......   e   
 0 
 
   
 
 
 
 .oo 3.20 
 
Phosphorus .pentcxide (P205)         tr .   .o tr. tr. 
 
Carbon dioxide (CC'2) 
 
44.27  45oll   46.78   
 
Silica (SiC2) ancl Insol. Ins cl. in HCl TCTf,L 
 
   3.05 4.50 2.74  
   eo 
99.96 99. 92 100.00 
 
o  4.73 343         
2.'67 1.14   
99.77 100.27 100.00 100,00 
 
1$. :Magnesian I,ir:JBstona 11 53B11  Pickens County. On r oad at junction of enst and west branch of Long Swar~ Crcek~1/ 
.V l fagncs ian Linostone "51Bll . Pickens County. l:Ta.in branch at Long Svfa'-lp Creek 3/4 nile north of junction of east ancl.nain branches  
!hrblc. Pickens County. Perserverancc_quarry.. 1 3/4 niles east of Jasper on the east side of Lone Swanp Creek.; 
Fine-grained white narble. Pickens County. Linc oln Quarry. 1 J:ri.lo east of 
Jasper, Lone Swar:1p Creek.']/ 19, Fine-erainod sugary textured ma.rblo fron cliff side of Long Swar.tp Creek, 
south end of belt.2/ !brble., Pickens County. Detr0it Ha.rble Conpany. Between YThitestone Station 
and tho Pickens-Gilner county line directly on the Louisville and Nashville 
Railroad ./ 21. I.la.rblo. Pickens County. CryEtal liarble Conpany. On the east side of the 
Louisville anc.l Nashville RD.ilroacl, 1_,500 feet s outh of i"Thitestone ./ 
 
 Table 3 Sample No. 
 
21 SHADY DOLOMITE 
 
1 
 
2 
 
3 
 
4 
 
5 
 
6 
 
Hoisture at loooc 
 
      
 
Loss on ignition 
Scdn. (Na2o) Potash (~0) 
 
.... 46.14 43e46 44.83 44.67 44.60 45.46 
 
.o8   .- 
 
.o7 .o8 
 
.10     . 15 .17 
 
Limo (CaO) 
 
30.30 28.78 29.60 28.86 35.86 34.08 
 
Magnesia. (M'gO) 
 
19.56 17.57 19.65 19.78 15.26 15.80 
 
Alumina (Al2o3) Ferric oxide (Fe2o3) Ferrous oxide (FeO) I1b.nganous oxide (MhO) 
Titanium dioxide (Ti02) 
 
.24 .24 .16 2.35   1.28 e47 .11 1.40 .64 1.20 
  5.76 1.73    
 1.60 .52 .oo     0       
 
Sulphur trioxide (so3 ) 
 
.oo 
 
Phosphorus pentoocide (P205) .o2 
 
Carbon dioxide <co2) 
 
- 
 
Silica (Si02) 
 
1.76 
 
 
.OJ 
 
le35 
 
  
.02 
  
2.30 
 
.07 
 
  2.32 
 
.oo .oo 
 2.50 
 
.01 .o1 
  
2.04 
 
Clay bases Barium (Ba) Insoluble TOTAL 
 
.78      .92 ~ 
 .oo .55 .oo   1.16 
  .21 .50     
100.00 102.27 100.01 99.70 100.00 100.00 
 
1. Limestone (Beaver)*. Bartow County. Two miles south of Sophia on the east 
 
side of the road between Sophia and Grassdale./ Heavy-bedded and 
 
massive, semi-crystalline and of a gray-blue to dark blue color. Strati- 
 
graphic thickness of about 30 feet, overlain by shales of Rome fox~tion. 
 
2. Dolomite (Snady). Bartow County. Southeast of Cartersville. 
 
3. Dolomite (Shady). Bartow County. PagaNo. 2. Southeast of Cartersville .4. Limestone (Beaver)"~:. Bartow County. C~rtersville, City Water Works Spring. 
 
5. Limestone. Polk County. rJarble Hill in the Town of Rockrrart, just s outh 
 
of the Southern Railway depot./ Quarries are situated in the upper gray 
 
magnesian beds of Chickamauga limestone and are capped by the Rockmart 
 
shales and slates. 90.3 feet of light grayish-blue and light blue heavy- 
 
bedded limestone. 
 
 
 
-1~ Beaver limestone now classified with tho Shady dolomite. 
 
 Table 3 (Continued) 
 
 
2:J..A 
SHADY DOLOETE 
 
6 Limestone. Polk County. G. W. Horgan property, Ho rgan Hills, just south 
of the road which parallels the southeast side uf Uharleo 
Creek .2/ Upper portion of the Ch:i.ckama~ga limestone is expos ed 
in three separate hills abcut five miles southwest of P..ocknart, The limestones are heavy-bedded and gray to light blue in 
color 
 
 Table 4 S.:1mple No. 
 
22 
 
KNOX DOLOHITE 
 
1 
 
2 
 
3 
 
4 
 
6 
 
7 
 
Moisture at l00C 
 
Loss on ignition 
Soda (Na2o) Potash (K2o) Lil!l.O (CaO) 
 
... . ...... .. .... 44.84 45.32 '37.98 42.57 37.53 45.23 47.01 
 
.10  
 
,  
 
 - . 
 
/ 
 
- .18        
 
 
 
29.46 31.30 28.40 31.02 25.60 30.26 28.56 
 
Hagnesia (J.rgO) Alumina (Al2o3) Ferric oxide (Fo2o3) Ferrous oxido (Feb) 
lfunganc,us oxide (rmo) 
 
18.92  
.62 
  
 
21.88 .39 
loll 
     
 
14.20 1.85 2.40 
    
 
16.00 
 
1.52 
 
 
 
16.00  2.60 
    
 
18.64 
  
o94 
   
 
20.98 
  
1.08 
  
 
Titanium dioxide (Ti02) Sulphur trioxide (S03) 
 
 0 
.oo 
 
Phosphorus pentoxide (P205) 02 
 
Carbon dioxide (C0 2) 
 
o 
 
Silica (Si02) 
 
4.82 
 
Undetermined Clay bases 
 
 ].04 
 
  
4. 0   0 
 .27 
 o e    oa 
 
...... 
 
  0  
15.03 , tt34 
   e 
 
  
.o1 .02 
  8 
5.86 o 3.oo 
 
 .oo .o1 
0 
15.40 
 
2.86 
 
 
.oo tr  
   
..3-25 .... 
lnq3 
 
  
.oo .ol 
  
..1...8.5. 
.51 
 
TOTAL 
 
100.00 99.1..7 100.00 lOOoOO 100.00 100.00 100.00 
 
1. Dolomite. Barto~ County. Paul F. Akin property, one-fourth mile northeast of Cave Station and about 400 f ee t north of the Kingston-Cartersville road./ 25 f eet thickness; gray, heavy-bedded and massive in appearance; 
fine-grained and partly crystalline with overburden.0f 15 feet of unconsolidated soil, chert and cherty limestone. 
2e Dolomite (cherty). Bartow County. From State Highway, Rt. 41, 3t miles 
southeast of Adairsville, Ga. Analysis by J . Goldstein. 3. Dolol!l.ite (cherty). Bartow. County. Property of 1-Ts . Lucile Hick, north side 
of North Carolina railroad near Graysville, Ga. Analysis _by J. Gold~ stein.. 
4 and 5.. Dolomite. Catoosa County.. Graysville Hinine and Marrufacturing Company, 
Quarry No. l,in the western portion of the Town of Graysville and directly on the Western and Atlantic Railroad./ No . 4 consists of 24~3 feet of gray and grayish-white dolomite grading down t o grayish-blue, dark blue and cherty gray at bottom. (12.7 feet of unsampled arenaceous gray, bluish-gray and dark blue massive and he.avy-bedded dolomite underlying the dolomite of No. 4). 
6 and ?-. Dolomite. Catoosa County. Graysville }fining and Hanufacturing Company, Quarry, one-half mile east of Graysville, Ga., No . 6 consists of 35 fe et of blue and bluish-gray dolomite at ea.stern side of the quarry. No. 7 represents 24.4 feet of dark blue and gray dolomite 400 feet west of No. 6 in the same quarry. 
 
 Table 4 (Continued) Sample No. 
 
2.3 KNOX DOLOlliTE 
 
8 
 
9 
 
10 
 
11 
 
]2 
 
13 
 
r..:oisture at lOOOC Loss on ignition Soda (Nc.2o) Potash (K20) 
Lime (CaO) 
Magnesia (MgO) 
 
 
  
31.37 14.74 
 
    
 
  33.62 
 
 
56.23 
   
24.70 
 
 44.07 
  
 
1J.90 
 
 
  31.59 20.72 
 
  
41.91 
   
16.30 
 
Alumina (Al2o3) Ferric oxide (Fe203) 
 
   
1e00 1.10 1.68 
 
  
 
.85 
 
.72 
 
Ferrous oxide (FeO) 
 
     
 
Bmganous oxide (1'in0) 
 
   
 
Titanium dioxide (Tio2) 
 
 
 
Sulphur trioxide (Sio3) 
 
  
 
Phosphorus pcntoxide (P20~)  
 
   
   Q 
        
 
        
   
 
Carbon dioxide (C~) 
 
    
 
Silica (Si02) 
 
22.03 
 
TOTAL 
 
100.00 100.00 100.00 
 
 
 
   
      
 
     
 
   
 
   
 
a 57 
 
.16 
 
100.00 100 .00 
 
 
   
 
  
  7.15 100 . 00 
 
8 - 12. Dolomite. Bartow County. Ladd Lime Company, Seaboard rai~road about two miles southwest of Cartersville ./ From t0p to bottom these arc as follows: (8) 10 feet of grayish-blue dolomite containing a three-inch layer of chert at a point three feet above the bottom. (9) 22 feet of gray dolo~te. (10) 21 feet of grayish-blue and dark blue dolomite. (11) 5.8 feet of grayish-blue dolomite. (12) 21.9 feet of gray dolomite; quarry floor. 
 
13. 
 
Dolomite. Bartow County. Howard Hydraulic Cement Company on the 
 
Western and Atlantic Railroad at Cement Statton./ Black, fine- 
 
grained, compact dolomite intimately veined With coarsely crystal- 
 
line calcite. Some thin seams of black flint, about one-half inch 
 
thick occur but not abundant. 
 
 Table 4 (Continued) 
 
24 KNOX DOLOHITE 
 
Sample No. 
 
14 15 16 17 18 19 
 
Loss on ignition Soda (Na2o) Potash (J<20) 
Lime (CaO) 
 
      o 
 
..... ..... ..... .... 40.81 44o30 44o97 44o05 4lo58 44o55 
 
~ 
 
..... 
 
. 
 
      
 
28.62 31.50 31.20 ~~.12 27.28 30.16 
 
Magnesia (11giD) 
Alumina (Al2o3) 
Ferric oxide (Fe2o3 ) 
Ferrous oxide (FeO)  
Uanga.nous oxide (}!nO) 
Titanium dioxide (Ti02 ) Sulphur trioxide (Si03) 
 
. ....16.60 
 
17.80 16.60 17.60 18.70 
 
.  
 
      
 
1.28 
 
1~32 
 
.90 .68 
 
     ~             
 
 I I I I 6 
 
  
 
.03 .01 o1 tr  .02 .02 
 
Phosphorus pentoxide (P205) .02 .02 .02 .02 .02 .o2 
 
Carbon dioxide (C02) Silica (Si02) 
 
      
 
8.54 
 
3o40 
 
11.76 
 
Clay bases TOTAL 
 
1.70 
 
.82 1.23 
 
100.00 100.00 100.00 100.00 100.00 100.00 
 
14-19. Dolomite. Catooso. County. Ho.lc Quarries directly on the Yiestern and Atlantic Railroad about 1~ miles southeast of Graysville./ 
121.3 feet thickness. Heavy-bedded and massive dolomite from gray to dark blue to grayish-blir"o containing sl!lall a1:1ounts of chert which is s omewha.t arenaceous. At bottom, whito and bluish flint vrith dc-lonite, fluorite and barite. 
 
 Table 4 (Continued) Sample No. 
 
25 KNOX DOLOMITE 
 
20 
 
21 
 
22 
 
23 
 
21~ 
 
Moisture at lOOOC 
Loss on ignition Soda (Na2oj Potash (KzO) Lime (CaO) 
 
 
4453 
.os 
.16 
29.24 
 
~~ 
...41.17 ~. 
  Q  
.35.69 
 
  
45 .30 
 
. . ... 
.33~05 
 
 ..l 
       e  
.31.16 .35 .00 
 
Magnesia (MgO) 
 
19,46 
 
Alumina (Al2o3) Ferric oxide (Fe2o3) 
Ferrous oxide (FeO) 
Manganous oxide ( I.fu.Q) 
 
 1.60 
. .    
. ... 
 
Titanium dioxide (Ti02) 
 
  
 
SPuhlopshpuhrorut rsi opxeindteo x(isdoe3 )(PzDs) 
 
.oo 
tr. 
 
Carbon dioxide (C02) 
 
 
 
Silica (Si02) 
 
4.22 
 
Clay bases 
 
.71 
 
16.21 18.09 
 
1.05 1.87 2.00 .76 
 
  
 
   
 
 
" .... 
  
  
3.88 
 
 
    
 . 0 
Not Recorded 
 
  
 
18.37 16.00 
 
~2.20 2.86 
2.60 
 
  
 
   
 
     
 oo 
4.29 
 
4.3.98 
....... 
 
  
15..40 
  38.13 
  
 
TOTAL 
 
100.00 100..00 100.00 100.00 100.00 
 
::20. 
 
Dolomite. Floyd County. J. Scott Davis property, Vans Valley along 
 
the west side of the hill to the northwest of the Davis residence. 
 
21. 
 
Hard dolomite (ballast rock)  Folk County. Southern States Port-lb:nd 
 
Cement Company, Rbckmart, Georgia. 
 
22. 
 
Knox dolomite (Cherty dolomit-e). Walker County. Kensington, north side 
 
 of Mill Creek on T. A. G. Railroad. 
 
23 & 24. Dolomite. Bartow County. Clifford Lime and Stone Company, 3 miles 
 
northwest of Kingston on a spur tracl{ of the Western and Atlantic 
 
Railroad./ The entire exposure belongs to tho Knox dolomite forma- 
 
tion. The dolomite being largely crystalline and of a bluish-gray 
 
or light color and breaki ng vith an uneven fracture. The analysis 
 
of No~ 23 shows the general chemical character of the entire exposure 
 
except tho chert which was omitted in sampling. No. 24 shows the 
 
chemical composition of the natural cement strata which consists of 
 
7.17 feet of cement rock. 
 
 Table 5 Sample No. 
 
26 CHICKAHAUGA FOID.f/1.TION 
 
1 
 
2 
 
Moisture at l00C Loss on ignition 
 
   
 
.02 
 
39.22 44.60 39.98 
 
Soda (Na20) Potash (K20') Lime (CaO) 
 
        
38.50 
 
.07 .15 35.86 
 
 Q  
 
42.72 
 
Magnesia (MgO) 
 
8.23 15.26 8.10 
 
Alumina (Al2o3) Ferric oxide (Fe2o3) Ferrous oxide (FeO) Manganous oxide (!lbo) Titanium dioxide (Ti~) Sulphur trioxide (S~) 
 
2.59 
1.51 
 
       
... .. 
 
Phosphorus pontoxide (P205)  
 
Carbon dioxide (C02) 
 
     
 
 .64 
  
     
 . oo 
     
 
.78 .84    
  0 
   
 
Silica (Si02 ) Clay bases 
Undetermined TOTAL 
 
.... 7.38 2.50 5-94 
 
  
 
., 
 
2.57  1.62 
 
100.00 100.00 100.00 
 
l. Red and greenish limestone. Walker County. Chickamauga Development Company, on the Central of Georgia Railroad in Chickamauga. 
2. Light blue, heavy-bedded limestone. Polk County. 90.3 feet thick from quarry a.t J:arble Hill, Rockmn.rt, Georgia. 
3 TJimentonc screenings from Southern States Portland Cement Company quarry, near Rockmart, Polk County. 
 
 Table 6 
 
27 H.'\.GNESIAN LIMESTONES IN THE COASTAL PLAIN FORMATIONS 
 
Sample No. 
 
1 
 
2 
 
J 
 
4 
 
5 
 
Moisture at 100C 
 
       
 
Loos on ignition Soda (Na2o) Pot3.sh (K20) Lime (CnO) 
 
     .OJ .15 
25.88 
 
 .14 . 16 
17.82 
 
 .16 . 10 
24.26 
 
 !t  
  
17.65 
 
    
  
12.21 
 
Magnesia (lJgO) 
 
15.01 10.72 13.06 13.73 11.55 
 
Alumina (Al203) Ferric Oxide (Fe203) Ferrcus oxidG (FeO) 
Uanganous oxide (HnO) Titanium dioxide (Ti02) Sulphur triclxide (S03) 
 
( 
 
( 
 
( 
 
( 
 
( 
 
( 3.14 ( 2.52 ( 6.41~ ( 2.13 ( 4.70 
 
       
   
 
        
 
 
    
  
 
 
 
 0 
   
 
  
    
 
 
Phosphorus pontoxide (P2 o5') .09 
 
.OJ 
 
.06    
 
Carbon dio::ddc (C02) 
 
          
 
Silica (Si02) 
and Insol. Undetermined 
 
17.17 40.23 20.JL~ 37.65 49.96 38.52 28.38 35.58 28.84 39.37 
 
TOTl~L 
 
100 .00 100.00 100.00 100.00 100.00 
 
Calcium carbonate Magncsiu:n carbonate 
 
48.53 31.82 43.36 31.51 21.19 31.41 22.50 27.40 28.70 24.15 
 
l.t. 2~ & 3 Limestone Brooks County. Devils Hopper, G. W,. Halloway property, 
l ot 447, 13th district, 2 miles northeast of Barwick./' 
 
1. Brownish, compact, hard limestone; similar to stone of bed 5 ca,f the water Falls sink; (Grady County). Weathers to soft, yellow, 
 
arenaceous material; breaks easily; 3 feet. Medium, hard, light cream-colored argillaceous limestone; weathered product, deep 
 
cream-colored clay; 15 feet. 2. Soft, white, argillaceous limestone vnth black veinlets, probably 
m::.nganese; weathers to yellowish argillaceous rnaterial. 3 I~rd, cream-colored, compact limestone, weathers to brovm, arenace- 
ous materi2.l. 
 
4 & 5. Limestone, Decatur County. H. H. Nossbau::1, ~filler Hydro Company, 
 
ncar Bainbridge, Ga. 
 
 28 
 
MAGNESIAN LIMESTONES IN THE COASTAL PLATI1 FORMl>.TIONS 
 
Table 6 (Continued) 
 
Sample No. 
 
6 
 
7 
 
8 
 
9 
 
10 
 
Uoisture at 100C 
 
...... ...... Gte 
 
  0  
 
Loss on ignition Soda (Na20) Potash (!S20) 
 
     e 37.84  
 
.46 .12 
 
.82 .25 
 
...... 36 ~ 
.18 
 
33 ,28 
 
Lime (CaO) 
 
26.74 23.86 27.66 27.90 23.88 
 
Magnesia (lfgO) 
 
16.47 15.46 14.43 15.32 14.60 
 
Alumina (Al203) Ferric oxide (Fe2o3) Ferrous oxide (FeO) 
 
( 
 
. ( 
 
( 
 
( 
 
( 
 
( 2.16 ( 3.16 ( 3.28 ( 1.34 ( 2.80 
 
       
 
Manganous oxide (Mn.O) 
' 
Titanium dioxide (Ti.02) 
 
        o    
 
Sulphur trioxide (S03) 
 
      
 
Phosphorus pentoxide (~2o5 ) 
 
tr. 
 
Carbon dioxide (C02) 
 
  
 
,04 o 
 
.70 
 
 
  
  
 
.06  
 
Silica (Sio2) and Insoluble 
Undetermined 
 
14.68 17.04 15,32 16.54 21,88 39.37 39.37 38.07 1,06 36.17 
 
TOTAL 
 
100,00 100.00 100.00 100,00 100,00 
 
Calcium carbonate Magnesiun carbonate 
 
47.74 42.60 49.36 49.79 42.68 24.74 32.46 30.18 32.04 30.50 
 
6. Limestone. Decatur County. Along the Atl antic Coas t Line Rail way, from 1 to 
l~ miles southwest of Recovery. 2/ 
 
7. Limestone, Decatur County. Lot 265 , district 31, 2 miles northwest of Face- 
 
ville. Ers . D. B. Bower property, Bainbridge , Georgia. 
 
8. Limestone. Echols County. J. I. Peterson pr operty. Along the Allapaha 
 
River, 3t miles belovv the bridge at Statenville, on the west bank of 
the river. 2/ 
 
9. Same. Analysis by J . Goldstein. 
 
10. Limestone. Grady County, Forest Falls or Limesink, 8 miles north of 
 
Whigham. 2./ 
 
 
 
Soft, white argillaceous limestone with brownish, concentric bands and ap- 
 
parently brecciated, hard, white compact limestone in a matrix of s oft, 
 
white, argillaceous lililcstonc. Irregular, brovmish bands run through ag- 
 
gr egate and matrix Yl:itbt)ut break, 
 
 29 
 
MAGNESIAN LIMESTONES IN THE COASTAL PLAIN FORMATIONS 
 
Table 6 (Continued) Sample Noe 
 
il 12 13 14 15 
 
Moisture at l00C Loss on ignition Soda (Na2o) Potash (K2o) Lime (CaO) Magnesia (MgO) 
 
          
 
      
 
 0  
 
.31 .04 .06 
 
...... .35 
 
19.44 29. 60 25.26 27.60 28.32 
 
14.08 17'.43 14.95 16.67 1?.10 
 
Alumina (Al2o3) Ferric Oxide(Fe2o3 ) Ferrous oxide (FeO) 
 
~ 2.04 ~ 1.30 ~ 2.00 ~ 1.60 ~ 1.20 
       
 
Manganous oxide (!mO) 
 
     ea eoe  
 
Titanium dioxide (Ti02) Sulphur trioxide (S03) 
 
             
 
Phosphorus pentoxide (P2o5) Carbon dioxide (co2) 
 
.04 .05 04 .66 tr 
         
 
Silica (Sio ) 2 and Insol. 
 
30~65 7.22 20.12 12.40 10.59 
 
Undete rmined / ToTAL 
 
33.15 44.20 36.97 41.59 42.49 100.00 100.00 
 
Calcium carbonate 
 
Ma nesium carbonate 
 
11. Limestone . Grady County. Little 
 
Soft, white argillaceous limestone;picolitiC.~tructure; 
 
phase of limestone with concretionary structure. 
 
. 
 
12. Limestone. Grady County. Jas. Blackshear place, 8 miles south of Cairo, in 
 
the escarpment on the east side of Ochlocknee River, 200 yards south of 
 
Bonnet Lake.')/ 
 
i i 13. Limestone. Thomas County. McKinnon property, 5 miles east of Thomasville, mile south of the 5-mile post on the Boston road and north of the 
 
5-mile post on the Atlantic Coast Line Railroad.2/ 
 
14. Limestone. Thomas County. 1utchell propert11 in the steep slope of an old limesink, 7 miles west of Thomasville and 2 mile north of the ThomasvilleBo~ton public road, near the eastern boundar,y of the Mitchell propcrty.J/ 
 
15. Limestone . Thomas County. R. G. r.u tchell place, ~ milJ west of the Thoma.sville-8pringhill road, 7~ miles south of Thomasvill e.-:..J 
 
 BIBLIOGRAPHY 
 
Additional information and annlyscs of dolo~tes and magnesian linestones of Georgia nay be obtained from the follovnng reports as well as from t he fil es of the Georgia Divisi on of T.:ines, !'.fining and Geology. 
 
1. ;.1cCallie1 S. W. ~ ~rbles of Georgia: Ge "'~ rgia Geol. Survey Bull. 1, 1907, 2nd ed. 126 pp., 52 pl., and 2 naps. (rut of print) 
2. J1cCallie, s. w. Roads and Road Building l~aterials of Georgia: 
Georgia Geol. Survey Bull. 8. 1901. 264 pp., 27 pl., and 1 r.mp . 
 
3. Brantly, J. E. Limestones and I.rarls of the Coastal Plain of Georgia: Georgia 
Gcol. Survey Bull. 21. 1917. 289 pp., 18 pl., and 1 map. 
 
4. l!cCallie, S. VI. !.!ineral Resources of Georgia: Georgia Geol. Survey Bull. 23. 1910. 164 pp., 20 pl., and 2 maps. (Cut of Print) 
5. Veatch, Otto and Stephenson, L. u. Geol ogy of the Coastal Plain of Georgia: 
Georgia Geol. Survey Bull. 26. 1911. 463 pp., 30 pl., and 2 naps. (Cut of print) 
 
6. I.hynard , T. Poo le. Limestones and Corront IJa.terials of North Georgia: Georgia Geol. Survey 27. 1912. 296 pp., 22 pl., and 1 ~ap. 
 
7. Bayley, Yr. s. Geology of the Tate Quadrangle, Georgia: Georgia Geol. Survey 
Bull. 43 1928. 170 pp., 22 pl., 2 figs., and 2 maps. 
8. Furcron, A.S., Ilinyan, A. c., an~ Snith, R. r;. Rock \Jool- 0pportunities for 
?.nnufacturine in Georgia: Georgin Geol. Survey Inform tion Circular 10. 1939. 18 PP 
 
9. Butts, Charles. Geology of the Paleozoic Rocks of Geort;in. IIanuscript in files of the Georg.Ln Division of nnes, :iS.ning nnd Ge0logy. 
 
10. Ha yes, C. 1'.". Rone, Ga.- Aln.: U. S. Geol. Survey Folio 78. 1902. 6, (3) pp., 4 maps. (Cut of print) 
11. LaFor ge , Lawrence and Phalen,\',-. C. Ellijay, Gn- N. c. -Tenn.: U.S. Go ol. 
Survey Folio 187. 1913. 18 pp., 4 maps. 
 
l2. l' nynard, T. Poole. Directory of Comr.1ercial !Jinerals in Ge or .r, ia and Alabama 
 
.. 
 
along the Central of Georgia Rc:tilway: C-entral of Georgia Railway, Industrial 
 
Depa rtment. 154 PP 
 
13. Ge or ei a Division of l::ines, :linin~ and Geology. Geol ogic l.~p of Geort;ia. 1939. 
 
Scale: ~1~500,000~ 
 
 
 
14. Hull, J. P. D., Shearer, H. K. A Prelimina ry RepGrt on a Part c f the P,;rites Depos i ts of Gcoreia: Georeia Geol. Survey Bull. 33 . 1918. 224 pp., 17 pl., and 1 m.1.p. 
 
15. Brantly, J. E. Lincstono a t tho Ladd Quarries near Cartersville, GeorGia. 
February, 1915. Unpublished manuscript in the files of the Geor[in Division of Hine s, Hinine a nd Go0 locy~