BRUCITE, M-145. Nevada. Nearly white
to buff, gray or brownish masses. 
Check for availability.

CALAMINE, see HEMIMORPHITE or SMlTHSONITE.

CALCITE, M-150.Missouri or Nevada. White,
yellowish,  sub-transparent to translucent cleavage rhombs. 

CALCITE, M-150A. Canada. Coarse
crystalline, salmon pink color. 

CALCITE variety TRAVERTINE, M-150B.
California. Banded brown to buff. Clearly delineated depositional layers exhibited. 

CALCITE, M-150C. California.
Coarse crystalline, skyblue. 

CALCITE variety ICELAND SPAR, M-150D
Mexico. Clear cleavages to show excellent birefringence.
Please ask about the grades and sizes available and their costs.  

CELESTITE, M-155. California.
Grayish blue, compact, fibrous vein sections
with a "satin spar" structure. 1x1 and 1x2 inch
are largest sizes. Check for availability.

CHALCEDONY see under QUARTZ

CHALCOCITE, M-170A.
Wisconsin. Chalcocite from a supergene 

enrichment process.  Very minor associated pyrite, chalcopyrite
or bornite. The mine is now closed.  

CHALCOCITE, M-170C. 

Crystalline masses. 

This chalcocite represents classic chemical weathering. 

An environment of supergene enrichment with a 

fluctuating water table enabled this type of chalcocite to form.

CHALCOPYRITE, M-175C. Mexico or Arizona. Pure masses. Good,
bright classic color. 

CHALCOPYRITE, M-175D. Mexico. Acid treated to produce the "peacock"

copper colors.  1" pieces at $1 each.  1.5 - 2" pieces at $3 each.  SL.

CHERT, See under QUARTZ.

CHIASTOLlTE, see under ANDALUSITE.

CHLORlTE (CLINOCHLORE), M-180. 
California. Fine to coarse flake, dark green
masses. 

CHLORITE, M-185. Michigan
High iron, fine grain flaky dark green masses