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Clairite Mineral Data
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General Clairite Information
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 Chemical Formula: |
(NH4)2Fe+++3(SO4)4(OH)3•3(H2O) |
| Composition: |
Molecular Weight = 692.94 gm |
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Iron 24.18 % Fe 34.57 % Fe2O3 |
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Hydrogen 1.16 % H - % Calc as (NH4)2O |
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Hydrogen 1.31 % H 11.70 % H2O |
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Sulfur 18.51 % S 46.22 % SO3 |
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Nitrogen 4.04 % N 7.52 % (NH4)2O |
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Oxygen 50.80 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
(NH4)2Fe3+3(SO4)4(OH)3•3(H2O) |
| Environment: |
Formed from the reaction of the oxidation products of pyrite with ammonia produced by the decay of organic matter. |
| IMA Status: |
Approved IMA 1983 |
| Locality: |
Lone Creek Fall cave, near Sbri, eastern Transvaal, South Africa. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Claire Martini (1936-), South African, wife of the describer of the species, Jacques Edouard Martini. |
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