Difference between revisions of "Black calcite"
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G.S.Brady, ''Materials Handbook'', 10th edition, McGraw-Hill, New York, 1971. | G.S.Brady, ''Materials Handbook'', 10th edition, McGraw-Hill, New York, 1971. | ||
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* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 131 | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 131 | ||
Revision as of 14:07, 29 April 2016
Description
A naturally occurring black-color Calcite ore. The dark color of black calcite is used to Manganese oxide impurities. Black calcite ore also contains silver deposits for which it is mined (Brady 1971). It is not the same as black chalk.
Additional Information
G.S.Brady, Materials Handbook, 10th edition, McGraw-Hill, New York, 1971.
Sources Checked for Data in Record
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 131