Tripoli deposits of Georgia

Information Circular No. 9
Georgia Department of Forestry and Geological Development
DIVISION OF GEOLOGY
RICHARD W. SMITH, State Geologist Atlanta, Georgia
Tripoli Deposits of Georgia
*
JANUARY 1937
*
By
GEOFFREY W. CRICKMA Y
Partly Reprinted from Forestry-Geological Review, Vol. 7, No. I.

Page 3
Information Circular No. 9 Georgia Department of Forestry and Geological Development
DIVISION OF GEOLOGY
Richard W. Smith, State Geologist Atlanta, Georgia

TRIPOLI DEPOSITS OF GEORGIA

By
GEOFFREY W. CRICKMAY
Partly reprinted from Forestry-Geological Review, Vol. 7, No. 1.
JANUARY, 1937

The name "tripoli" comes from northern U. S. Bureau of Mines includes all the soft its extreme porosity. It is generally loose-

Africa where a deposit of siliceous earth silicas under the general name of tripoli but ly coherent so that a slight pressure be-

has long been known to occur near Tripoli in the trade two types of soft silica are rec- tween the flingers reduces it to a powder

in Italian Libya. This earth is made up ognized. The abrasive earths obtained main- of round spongy grains Jess than .01 mm.

mainly of the siliceous tests of minute ly from Missouri and Oklahoma are called in diameter. These little grains are quartz,

plankton (diatoms), and the rock is thus tripoli; the earths for filler obtained main- and are thus hard enough to scratch steel.

sometimes called fossil flour or fossil meal. ly in Illinois and Tennessee are called Their spongy character makes the coherent

About 85 years ago siliceous earths were amorphous silica. Sligh~ differences in phases extremely absorbent, a property

discovered near Dalton, Whitfield County, physical properties have lead to widely dif- which recommends the material for filter

Georgia, during the construction of the ferent uses and consequently distinctions blocks. The deposits occur in horizontal

Western and Atlantic railway, and these are made in the trade which are not gen- beds interstratified with limestone which

were used locally as an abrasive. Some 20 erally recognized by the geologist. The may be partly replaced by chert. The pre-

years later, in 1871, similar earths were usage of the U. S. Bureau of Mines is h ere dominant color is cream and pink but va-

mined in southwestern Missouri. They followed', and tripoli or soft silica is di- rious shades from ivory to red are found.

were called tripoli because they were erron- vided into two types, t he Missouri-Okla- The Illinois-Tennessee tripoli (amor-

eously thought to be similar to the well- homa and the Illinois-Tennessee types.

phous silica to the trade) is not amorphous

known earths of Tripoli, from which they The Missouri-Oklahoma tripoli has a silica but is chalcedonic quartz with cryp-

differ in containing no fossils a nd in being very low apparent specific gravity due to tocrystalline structure. The grains are

composed of chalcedonic rather than opa:l-

escent quartz. These differences are so

fundamental that the two types of earth

are now generally used for different pur-

poses, but the name "tripoli" has remained

with the Missouri earth while the African

tripoli is known as diatomaceous earth or

tripolite. Diatomaceous earth is known to

occur in the Atlantic Coastal Plain but no

deposit is known in Georgia. On the other

hand, large deposits of tripoli are known in

northwestern Georgia, and although these

have not been extensively mined, their size

and accessibility invite future development.

This paper gives a general account of t he

properties of tripoli with comparative tests

of Georgia material, followed by a descrip-

tion of the individual tripoli deposits of the

State.

Siliceous earthl is commonly called "soft" silica to distinguish it from finely ground quartz, called "hard" silica. The

lWeigel, W. M., Technology and uses of

(

silica and sand: U. S. Bur. Mines, Bull.

266, 1927.

Johnson, B. L., and Davis, A. E., Abrasive materials: Minerals yearbook-1936: U. S. Bur. Mines, pp. 880-881, 1936.

Eardly- Wilmot, V. L .. Abrasives-part 1 - siliceous abrasives: Can. Dept. of Mines, pub. No. 673, pp. 70-77, 1927.
Ladoo, R. B., Non-Metallic Minerals-occurrence- preparation- utilization: New York, 1925, pp. 641-651.

Figure 1-Diagram showing proportion of silica, alumina, and iron oxide in tripoli (analyses of Georgia tripoli by Edgar Everhart). The apex of the diagram r epresents 100 per cent silica; for example, number 8 contains 99.6 per cent silica and very little
iron or alumina; number 1 contains less than 94 per cent silica and nearly equal por-
tions of iron a nd a lumina. 1- 0ld Bobo place, Floyd County; 2 - L. J. Vaughn, Catoosa County; 3-G. B. Hulme, Bartow County; 4-J . R . Heistand, Bartow County;
5-W. H. Boss, Walker County; 6- Missouri cream tripoli; 7-Missouri rose tripoli; 8-Illinois tripoli,

Page 4

very similar in appearance to the Missouri There are no accepted standards for trip- are found to grade downwards into un-

earth, but are commonly of smaller diam- oli principally because many of the phys- altered siliceous rocks such as novaculite.

eter (average diameter of grains is said to ical characteristics are not susceptible to Most of the Georgia deposits, however,

be about .002 mm.). The material is com- measurement and specifications are differ- change very little with depth. The deposit

monly compact and not highly porous. Pure ent for each use. The material marketed near Harrisburg has been prospected by

white tripoli, rare in the Missouri-Okla- by the largest producers in Missouri and auger hole to a depth of 65 f eet, and no

homa area, is common in the Illinois-Ten- Illinois has become "standard" only by cus- appreciable change in coherence has been

nessee fields.

tom. Consumers are mainly large indus- found. Some geologists argue that tripoli

The Georgia tripoli compares most trial concerns who select a particular type has been formed by disintegration of chert

closely with the Missouri-Oklahoma ma- of tripoli by trial and error. Newly found (a siliceous replacement of limestone) but

terial which it closely resembles in shape deposits are slow in development because gradations between chert and tripoli are

and size of grains. The grains are com- the consumer, lacking any standard of not known in Georgia. Many of the Geor-

posed of chalcedonic quartz. The color of comparison, is generally unwilling to gia deposits occur apparently at a definite

Georgia tripoli is generally lighter than the change to a different earth. This study horizon high in the Knox formation sug-

Missouri earth; many deposits include a has shown that some of the Georgia trip- gesting that the siliceous character of the

large amount of ivory to white tripoli.

oli is similar in many respects to the beds may perhaps be original, for intense

According to the U. S. Bureau of Mines, "standard" Missouri tripoli, but Georgia silification of this peculiar type is not

total tripoli production in 1935 was 27,375 producers have found considerable diffi- likely to occur at one horizon over a wide

short tons valued at $383,416, with aver- culty in marketing their product.

area. In some places (noted particularly

age value of $14.00 a ton. This is nearly Figure 2 presents the results of screen- at the deposit near Dalt on, Whitfield Coun-

7,000 tons more than that produced in ing tests on Georgia tripoli, showing size ty) silica has been introduced into the

1934, but the average price is $2.00 a ton distribution of grains. The Jump material tripoli and now forms narrow veinlets along

less. Crude tripoli generally sells for less was first carefully broken down in an iron joints and bedding planes. Two general

than $6.00 a ton at the mine; the average mortar, then rolled on paper, so as to loos- theories seem plausible. One holds that the

price of crude in 1935 was $2.25 a ton. en the individual grains without breaking tripoli originates from decomposition of

Refined and classified tripoli ranges in price them. A sample of white tripoli from Ly- limestone containing silica which was de-

from $8.00 to $40.00 a ton.

erly was more completely ground in the posited at the same time as the enclosing

Tripoli is used mainly as an abrasive, iron mortar to find out how much error was rock; the other maintains the silica was

and 37 per cent of the 1935 production was possible in the pulverizing method. The introduced at a later date by solutions,

put to this use. The Missouri tripoli is histogram of this material shows that this possibly hydrothermal. No definite evi-

particularly suited for buffing and burnish- error is small, and that the diagrams are dence favoring either one of these theories

ing. Tripoli is the abrasive agent in many accurate enough for comparative purposes. has been obtained in this study.

scouring soaps and powders. The next The Georgia tripoli is shown to be gene-

- - - - 0,- - - -

most important use is as a filler, and 18 rally coarser grained than the Missouri

DESCRIPTION OF PROPERTIES

per cent of the 1935 production was put to earth. Some deposits, such as that on the

Bartow County

this use. Soft silica is extensively used as Hamilton place near Dalton, are composed Tripoli occurs at a number of places in

a filler in special paints, in the manufac- of grains of nearly equal size, but in others Bartow County but nowhere are the de-

ture of rubber, and in refractory cements. there is considerable range in size.

posits large enough to be mined. The ma-

About 11 per cent of the 1935 production Tripoli is mined by both underground t erial most commonly overlies and is grad-

was used for admixture in special cements and open-cut methods. Many of the Geor- ational into a very fine-grained siliceous

and concrete. Compact phases of the Mis- gia deposits are covered by 2 to 6 feet of rock resembling novaculite which occurs as

souri tripoli are quarried in blocks cut to overburden and can thus be mined by sur- irregular masses in the Shady limestone.

desired shape and size for filtering water, face methods. Under-ground methods have The "novaculite" is thought to be a silice-

but according to the U. S. Bureau of Mines been used in Walker and Whitfield coun- ous replacement of the limestone. The

nearly all such products are now exported. ties but the mines are now abandoned and tripoli seems to have resulted by weather-

In the past, tripoli has been used in large inaccessible. The crude tripoli is hand ing of the "novaculite", and thus the de-

amounts as a parting sand for castings, picked and generally classified into two posits are restricted to a surficial weathered

but in 1935 this use accounted for less grades, white or cream, and pink. It is zone. The writer has seen small deposits

than 10 per cent of total product ion due dried for shipment without further sep- of this type on the property of the Paga

presumably to both the small output of aration. In Missouri and Illinois milling Mining Company, 3 miles south southeast

foundaries and the use of ground silica and methods involve crushing, pulverizing, and of Cartersville, and on the property of the

other competitive products in place of trip- classification by screens and air separation. White Manganese Corporation, about 1

oli.

Both wet and dry methods are in use. The mile south of White. Tripoli has been re-

The chemical composition of tripoli is satisfactory development of the Georgia ported to occur at a number of other

distinctive. Good grades average more tripoli deposits will be dependent on the places in the area underlain by the Shady

than 95 per cent silica and commonly more erection of modern mills to insure some Iimestone.z

than 98 per cent. Iron is generally present uniformity of product.

A small deposit of tripoli is said to oc-

as the red or brown oxide. It does not Tripoli occurs in the following counties; cur near Kingston in an area underlain by exceed 2 per cent in pink varieties and is Bartow, Catoosa, Chattooga, Floyd, Gilmer, the Knox dolomite.

less than 0.2 per cent in white and cream Murray, Polk, Walker, Whitfield. It has

Catoosa County

varieties. Combined water, mainly in been mined mainly in Chattooga, Walker Tripoli is exposed at several places in

clays, amounts to less than 0.5 per cent. and Whitfield. Most of the deposits occur the central part of the county, 4 to 6 miles
Clay up to 5 per cent is not considered an in the upper part of the Knox dolomite south southwest of Ringgold in an area unimpurity for it seems to impart certain (Cambro-Ordovician), and are associated derlain by the Knox dolomite.a The de-

desirable qualities. The alumina content, with chert layers. Tripoli also occurs in

generally less than 2 per cent, gives some association with the Bangor limestone 2Hull, J. P. D., La Forge, L., and Crane, W. measure of the amount of clay present. A (Mississippian), Shady limestone (Cam- R. , Manganese Deposits of Georgia:

series of analyses in graphic form is pre- brian), and Murphy marble (pre-Cambri- Georgia Geol. Survey Bull. 35, 1919.

sented in figure 1. Here is shown the sim- an).

(See map opposite p. 34).

ilarity of Georgia tripoli with commercial The origin of tripoli is debatable. Some SHayes, C. W., U. S. Geol. Survey Geol.

grades from Missouri and Illinois.

deposits, such as those in Bartow County, Atlas, Ringgold folio (No. 2), 1892.

Page 5

posits have not been adequately prospected, The deposit is in the hands of the owner properties. The footwall of the deposit

and their extent is unknown.

and W. J. Seas, operating under the name consists of fine-grained sandy shale con-

L. J. Vaughn Property (R. F. D. 1, of Tennessee Valley Mineral Company (R. taining a few thin tripoli layers and con-

Ringgold, Georgia) consists of lot 320, F . D. No. 3, Summerville, Georgia). About siderable chert. Although no limestone is

28th. district, 3rd. section, 1.3 miles north 450 tons of tripoli have been mined from exposed in the immediate vicinity of the

of Mt. Pisgah Church on the Ringgold- an open cut which is largely slumped. The pits, the deposits appear to lie within the

Beaumont road. The property lies 4 miles body is between 40 and 50 feet in width Bangor limestone.

south southwest of Ringgold, the nearest and has been traced about 1000 feet along

Floyd County

shipping point on the N . C. and St. L. Rail- the strike but probably extends further. A large part of southeastern Floyd Coun-

way. White tripoli with red streaks is said Three beds are exposed in the cut. A lay- ty is underlain by the Knox dolomiteG in

to extend to the bottom of a 7 foot test er of white tripoli 15 feet thick occupies which tripoli occurs at a few scattered lo-

pit which is now caved. Screen tests show the western side; cream tripoli 15 feet thick calities. The deposits near Silver Creek,

the material to be amongst the finest forms the center; white tripoli 8 to 10 feet 5 miles south of Rome, are the most ex-

grained of any of the Georgia deposits; thick occupies the eastern side. The strike tensive.

more than 80 per cent readily passes of the formation, as indicated by chert Old Bobo Place is situated on the east
through a 200-mesh screen. Chemical an- layers, is N. 25 E ., and the dip is so E. side of the Southern Railway just south

alysis by E. Everhart of a grab sample col- A chert layer, in places having an ame- of Silver Creek station, (owned by the

lected by R. W. Smith in 1"929 shows 3.14 thystine color, is exposed along the west- Dabbes estate). This property was exam-

per cent alumina indicating a relatively ern margin of the body, and is 2 to 3 feet ined by R. W. Smith in 1929 who reports

high content of clay (see fig. 2). No ship- thick. The chert contains an unidentified that three test pits on the hillside reveal

ments have been made from this property. green clay-like mineral which was noted at good grade of white to buff tripoli with

The extent of the deposit cannot be de- a number of the tripoli deposits of the about 4 f eet of overburden which includes

termined without further prospecting. Fur- state. W. J. Seas reports auger holes were some chert. The tripoli in places contains

ther deposits are said to crop out on hill put down 60 to 65 feet in depth revealing a perceptible quantity of clay which may

slopes a quarter of a mile east of the good grade tripoli throughout. Green clay prove undesirable for some uses. Thin

county road. The overburden is every- occurs as "horses" in the body and also veinlets of quartz occur in the tripoli, and

where thin, generally less than 5 feet, and forms the hanging wall on the east side. these would have to be removed by screen-

if the deposit proves large enough it could This clay superficially resembles a fullers 6Hayes, C. W. , U. S. Geol. Survey Geol.

be satisfactorily developed by surface min- earth but has not been tested for bleaching ing.

Atlas, Rome folio (no. 78) 1902.

Chattooga County

so 100200~25

60 100 200325

SO 100 200~25

.so 100 200~26

Tripoli occurs in two separate areas in

Chattooga County; in the southern part

near Lyerly, and in the northern part near

Harrisburg. The deposits near Lyerly are

underlain by the Knox dolomite (Cambro-

Ordovician) ,4 those near Harrisburg are

underlain by the Bangor limestone (Mis-

sissippian) .5

Mose Clayton Property (R. F . D. 1, Ly-

erly, Georgia) is 1 14 miles (2 miles by

road) west of Lyerly, the nearest shipping

point on the Central of Georgia Railway.

The deposit has been prospected by an open

pit 25 feet in length which exposes 4 to 6

feet of friable white tripoli on the east side

of the county road. The bed strikes N.

20" E., and dips 75 E. Screen tests of a

sample of cream tripoli, submitted by W. J .

Seas of -Harrisburg, show the material to

be very fine-grained, 80 per cent readily

passes through the 200-mesh screen (see

fig. 2). Most of the tripoli now exposed is

white rather than cream. Screen tests of

the white material show more than 50 per

cent retained on the 200-mesh screen. A

small tonnage is said to have been shipped

from this property but the cut is now aban-

doned, and the sides are partly slumped.

T. M. Mitchell Property consists of lots

54 and 55, 13th. district, 4th. section, about

% mile south of Harrisburg station on the

Tennessee-Alabama and Georgia Railway.

4For distribution of this formation see: Hayes, C. W., U. S. Geol. Survey Geol. Atlas, Rome folio (no. 78), 1902.
5For distribution of this information see: Hayes, C. W., U. S. Geol. Survey Geol. Atlas, Ringgold folio (no. 2), 1892.

CREAM

WHITE

WHITE-GROUND

CREAM

Figure 2-Diagram showing percentage grain-size distribution (histogram) of tripoli from Georgia and Missouri. Minus 60-mesh is less than .246 mm. in diameter;

minus 100-mesh is less than .147 mm.; minus 200-mesh is less than .074 mm.; minus 325-mesh is less than .043 mm. Georgia tripoli is listed by property owners for which aee description of deposits by counties. (Screen teats made in the laboratory of the Ceramics Department, Georgia School of Technology.)

Page 6

ing to obtain a marketable product. Chem- tend southwestward into Polk County but ovoid chert nodules. Many of these no-

ical analyses by Edgar Everhart indicate as far as known only near Hematite, on dules are crossed by open cracks in part

an objectionably high content of iron and the Southern Railway, about 18 miles filled with an unidentified green mineral

alumina (in two analyses alumina averages southwest of Rome, is t here a deposit wor- a lso seen at the Mitchell property in Chat-

3.56 per cent and iron averages 1.73 per thy of prospecting. Here a good grade t ooga County. The tripoli is a good grade

cent). The property, in charge of E. C. of white tripoli occurs on the property of of cream to buff color with rare seams of

Wright, (Rome, Georgia), is not now being Clifford D. Fite (Cedartown, Georgia). No limonite, generally less than a quarter inch

worked. Tripoli is also said to occur on screen test s or chemical analyses of the in thickness. The soft and incoherent sur-

, the F. H. Schalpback property near Silver material have been made.

face material grades downwards within

Springs, Georgia.

Walker County

three feet of the surface into coherent but

Davis Bauxite Mine is 3 miles northeast Tripoli is reported to occur at a number friable tripoli. The beds appear to belong

~of Cave Springs, on land owned by J ohn of places in Walker County, but at only one in the upper part of the Knox dolomite.

Phillips (Cave Spr ings, Georgia). This locality, the Boss property, described be- Considerable tonnage of tripoli is said to

property was examined by R. W. Smith in low, have deposits been developed. It have been shipped from this mine which

1929 who reports impure white tripoli was seems probable that th e deposit on the at one time had over 300 feet of under-

disclosed in an open cut from which baux- Mitch ell property in Chattooga County ex- ground tunnels.

ite was m ined in 1917. Chemical analysis tends northward into Walker County but

Whitfield County

by Edgar Everhart of a grab sample col- insufficient prospectin g has been done to Tripoli was first discovered in Georgia

lected by Smith shows only 76.36 per cent outline the deposit with any certainty.

near Dalton, on the Hamilton property de-

silica and 12.46 per cent alumina. No at- W . H. Boss Property (LaFayette, Geor- scribed below, during or shortly after the

tempt to mine tripoli has been made.

gia), consists of lot 125, 7th. district, 4th. construction of the Western and Atlantic

Gilmer County

section, 1% miles southwest of Naomi. The Railway in 1857. This is the only prop-

Tripoli is extremely rare in the area of property is 4 miles (6 miles by road) south- erty in the county that has been developed.

crystalline rocks, and therefore it is of east of LaFayette, the nearest shipping Hamilton Property lies along the west

some interest to fi nd small deposits asso- point on the Central of Georgia Railway. side of the N. C. and St. L. Railway, 1.5

ciated with the Murphy marble in Gilmer The mine, abandoned in 1929, is now caved miles north of Dalton and 1,4 mile north of

County.7

in, and exposures are inadequate to de- Dalton water works. The propertJ7 has

termine thickness and structure. There ap- been under lease to Bowen Brothers (Dal-

W. H. Searcy Property consists of lot 215, 7th. district, 2nd. sectio~, 71! mil e

pears to be three separate beds of t ripoli with intervening cherty layers conta ining

ton, Georgia) for a number of years but active mining has now been discontinued.

south of Cherrylog. Buff tripoli, apparent-

ly of good grade, has been found here but

no screen or chemical analyses have been

made. The deposit has not been prospected, and its extent is unknown.
Gordon County Tripoli appears to be rare in Gordon County, although a large area is underlain by the Knox dolomite, the formation ~ith which tripoli is most commonly associated. A deposit is known to occur on the property of W. M. Scott (Plainsville, Georgia), 1 71! miles north of Plainsville.

D_ade l'
I
' I
i
(
/

~Fannin

I~.,----

-:'.i

X

I

I
Gilmer

Mur ray County

, J(~

Tripoli has been known to occur in Murray County near Spring Place for many

" ''1~--"'---

years but no extensive development has

ever been made. No examination has been made of the properties and the following

Pickens

brief descriptions are taken largely from verbal reports by property owners.

-~ -

Tilton Property is about 2.5 miles west of Spring Place in an area underlain by the Knox dolomite. Several other deposits are reported in this vicinity but their extent is not known. The tripoli is said to be a good grade of cream to buff color, and maintains 5 to 10 per cent clay. A similar deposit, not yet prospected, has recently been found 1.5 miles south of Spring Place.
Buff tripoli is reported t o occur on the property of S. F. Johnson, near Crandall.
Polk County The tripoli deposits of Floyd County ex-

I
X iI Cherokee
w
X
r L.--_
. I
I Cob b
'1
I

7La Forge, Lawrence, and Phalen, W. C., U. S. Geol. Survey Geol. Atlas, Ellijay folio (no. 187), 1913.

I
FIGUR E 3.-0utline map of northwest Georgia showing distribution of tripoli deposits. Sha ded area is underlain by Knox dolomite.

Page 7

The first use for this earth, it is said, was Georgia by the addition of red iron ore in tests on Georgia earths to determine for

prior to the Civil War for polishing brass proper proportion.

what particular uses each is best adapted.

on the newly constructed W. and A. Railway, and trainmen frequently stopped here

Tripoli has such a variety of uses for each of which special properties are re-

The purpose of this circular is to give the

to obtain a supply of this natural soft quired that it has been impossible in this outstanding features of the Georgia depos-

abrasive. A large but unrecorded ton- study to make a comprehensive series of its with a brief description of properties.

nage has been shipped from this property

which during the peak of activity between 1914 and 1918 was worked by both underground and open-cut methods. Most of the old workings are slumped but exposures reveal good grade buff to yellow-brown tripoli of undetermined thickness. Screen

tests show that 82 per cent of the material

readily passes through a 200-mesh screen, and of this 71 per cent is retained on the

325-mesh screen, (see fig. 2). This tripoli

is thus particularly well adapted to a use which requires a narrow range in grain-

size.

The tripoli here occurs in beds interlayered with chert and ferruginous shale belonging apparently near the top of the Knox dolomite. The strike is N. 10 E. and the dip 40 E. The tripoli bodies are gen-

erally thinly bedded and in places the beds are separated by chert partings less than 14 inch thick.

0 l23 5

10 mm.

C. Peck Worthy Property includes lots 213, 224, and 249, lOth. district, 3rd. section, 9 miles northwest of Eton and 11 miles northeast of Dalton, Georgia. A selected sample submitted by the owner consists of good quality buff tripoli.

FIGURE 4. Tripoli grains magnified to show form. A. Georgia tripoli from Bowen Bros. property, near Dalton. Stipled grains are
not distinctly crystalline. Spherulitic structure is rare. B. Misouri "cream" tripoli supplied by C. E. Heinz, Joplin, Mo. Grains are all
chalcedony with spherulitic structure.

Summary

The following is a list of tripoli buyers:S National Sales Corp., 31-35 E. 13th St.,

The tripoli deposits of Georgia have been Braun Corp., 363 New High St., Los An- Cincinnati, Ohio.

only partly developed. Shipments have been recorded from Chattooga, Murray, Walker, and Whitfield counties. No min-

geles, Calif. Juergens & Anderson

Co., 55 East Wash-

Samuel H. French & Co., 400-412 Callowhill St., Philadelphia, Pa.

ing is now being carried on. The current ington St., Chicago, Ill.

Westinghouse Elec. & Mfg. Co., East Pitts-

impression that Georgia tripoli is distinct-

burgh, Pa.

ly inferior to tripoli from other states is Martin Senour Co., 2520 Quarry St., Chi-

shown by this study to be erroneous. The cago, Ill.

Algenon Lewin Curtis, P. 0. Box 61, West-

character of the grains is remarkably sim-

moor Lab., Chatteris, England.

ilar to grains from Missouri earths although Matchless Metal Polish Co., 842 W. 49th

the grain-size is generally slightly larger. Place, Chicago, Ill.

The grains of the Georgia tripoli are in part

of the "amorphous" type and are thus dis- Charles Cooper & Co., 4 Mulberry St., New The following is a list of tripoli produc-

tinct in this respect from the strictly chal- York City, (Buyer and Dealer).

ers:S

cedonic Missouri tripoli. The Georgia pro- Cooper & Cooper, Inc., 23 Cliff St., New Corona Products , Inc., Rogers, Benton

ducers have worked under the handicap of shipping unmilled earth which means that

York City.

County, Ark.

no guarantee of a uniform product can be Eimer & Amend, 201-209 E. 13th St., New Western Talc Co., 1901 E. Slauson St., Los

given. The deposits are large enough and York City.

Angeles, Calif.

of sufficient purity to invite further de-

velopment but it is believed satisfactory Jerome Alexander, 50 E. 41st St., New Tennessee Valley Mineral Co., Route 3,

marketing cannot be achieved without York City.

Summerville, Ga.

screening and classifying the earth.

L. A. Solomon & Bro., 216 Pearl St., New Geo. S. Mepham Corp., East St. Louis, Ill.

The color of Georgia tripoli ranges from white to reddish-brown. White tripoli, rare York City.

Olive Branch Minerals Co., Cairo, Ill.

or absent in the Missouri-Oklahoma area, The Globe Chemical Co., Murray Rd. & Big Ozark Minerals Co., 807% Washington

occurs in quantity in Chattooga County at both Mose Clayton and T. M. Mitchell properties, and in Catoosa County at the L. J.

Four R. R., St. Bernard, Cincinnati, Ave., Cairo, Ill.

Ohio.

Barnsdall Tripoli Co., Seneca, Mo.

Vaughn property. In the abrasive trade Gustave Fox Co., 3rd. & Race Sts., Cin- Independent Gravel Co., 220 'h W. 4th St.,

many buyers have a preference for pink cinnati, Ohio.

Joplin, Mo.

tripoli of the type mined in Missouri. The

color is due to a small content of red iron SFurnished by the Rare Metals and Non- Penn Paint & Filler Co., Antes Fort, Ly-

oxide and could be "manufactured" in Metals Division, U. S. Bur. Mines.

coming County, Pa.

Page 8
INFORMATION CIRCULARS
BY THE
Georgia Division of Geology
*
1. Gold in Georgia, by G. W. Crickmay, 1933. 2. Suggestions to Property Owners on Prospecting and Selling a Min-
eral Deposit, by R. W. Smith, 1934. 3. Kyanite, Vermiculite and Olivine in Georgia, by R. W. Smith, 1934.
Out of Print. 4. Gold Deposits of Georgia, by Roy A . Wilson, 1934. Out of Print. 5. The Common Rocks and Minerals of Georgia, by Lane Mitchell,
1935. 6. The Bleaching Clays of Georgia, by Harry X. Bay and Arthur C.
Munyan, 1935. 7. The Georgia State Museum, by G. W . Crickmay and Lane Mitchell,
1936. 8. Water, Georgia's Unknown Natural Resource, by R. W. Smith, 1936. 9. Tripoli Deposits of Georgia, by Geoffrey W. Crickmay, 1937.
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