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Hohmannite Mineral Data
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General Hohmannite Information
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 Chemical Formula: |
Fe+++2(SO4)2(OH)2•7(H2O) |
| Composition: |
Molecular Weight = 463.94 gm |
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Iron 24.07 % Fe 34.42 % Fe2O3 |
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Hydrogen 3.48 % H 31.06 % H2O |
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Sulfur 13.82 % S 34.51 % SO3 |
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Oxygen 58.63 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Fe3+2(SO4)2(OH)2•7(H2O) |
| Environment: |
Low-temperature precipitate in oxidized iron sulfide deposits. |
| IMA Status: |
Valid Species (Pre-IMA) 1888 |
| Locality: |
Antofagasta, from near Caracoles, Sierra Gorda district, Chile. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Thomas Hohmann (1843-1897), mining engineer of Valparaiso, Chile who discovered the first specimens. |
| Name Pronunciation: |
Hohmannite + Pronunciation  |
| Synonym: |
Castanite |
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ICSD 37328 |
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PDF 17-155 |
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