General Macquartite Information
|
 Chemical Formula: |
Pb3Cu(CrO4)(SiO3)(OH)4•2(H2O) |
| Composition: |
Molecular Weight = 981.28 gm |
| |
Chromium 5.30 % Cr 10.19 % CrO3 |
| |
Copper 6.48 % Cu 8.11 % CuO |
| |
Silicon 2.86 % Si 6.12 % SiO2 |
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Hydrogen 0.82 % H 7.34 % H2O |
| |
Lead 63.35 % Pb 68.24 % PbO |
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Oxygen 21.20 % O |
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______ ______ |
| |
100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Pb3Cu(CrO4)(SiO3)(OH)4•2(H2O) |
| Environment: |
Encrusting dioptase. |
| IMA Status: |
Approved IMA 1980 |
| Locality: |
Mammoth mine, Tiger, Pinal County, Arizona, USA. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Louis Charles Henri Macquart (1745-1803), French chemist who brought to France from Russia the samples of crocoite in which the element chromium was discovered. |
| Name Pronunciation: |
Macquartite + Pronunciation  |
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