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Coquandite Mineral Data
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General Coquandite Information
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 Chemical Formula: |
Sb6O8(SO4)•(H2O) |
| Composition: |
Molecular Weight = 972.57 gm |
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Antimony 75.11 % Sb 89.92 % Sb2O3 |
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Hydrogen 0.21 % H 1.85 % H2O |
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Sulfur 3.30 % S 8.23 % SO3 |
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Oxygen 21.39 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Sb6O8(SO4)•(H2O) |
| Environment: |
Probably produced by action of H2SO4 on stibnite, in a stibnite vein in silicified limestone |
| IMA Status: |
Approved IMA 1992 |
| Locality: |
Cetine mine, 20 km southwest of Siena, and the Pereta mine, Scansano, Tuscany, Italy. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Henri-Jean-Baptiste Coquand (1813-1881), Professor of Geology and Mineralogy, University of Marseilles, Marseilles, France |
| Synonym: |
IMA1991-024 |
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