BRUCITE, M-145. Nevada. Nearly white
to buff, gray or brownish masses. Class pack of 20 -
Check for availability.

CALAMINE, see HEMIMORPHITE or SMlTHSONITE.

CALCITE, M-150. Cost E-J. Missouri or Nevada. White,
yellowish, pinkish, brownish sub-transparent to
translucent cleavage rhombs. Class pack of 20 - $15.00.  Excellent for

demonstrating rhombohedral cleavage.  The best basic calcite for general

teaching purposes.

CALCITE, M-150A. Canada. Coarse
crystalline, salmon pink color. Class pack of 20, some aggregates, some rhombs - $15.

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

Class pack of 20 - $20.  

Check for availability. As of  4-10-2009 available.   

CALCITE, M-150C. Cost H. California.
Coarse crystalline, skyblue. Class pack of 20 - $25.  Check.

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

Excellent to teach optical properties of minerals.  

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. Nearly pure Chalcocite from a supergene 

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

material is gone, it is gone.  

CHALCOCITE, M-170C. Cost N.

Crystalline masses. Good collector specimens

as well as a rare opportunity for the student to observe. 

This chalcocite represents classic chemical weathering. 

An environment of supergene enrichment with a 

fluctuating water table enabled this type of chalcocite to form.

Limited supply, the Flambeau mine is closed and has been

completely reclaimed as wetland, grassland and forest.

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. Class pack of 20 - $22.00.

CHLORITE, M-185. Michigan
High iron, fine grain flaky dark green masses
Class pack of 20 - $22.