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Tristramite Mineral Data
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General Tristramite Information
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 Chemical Formula: |
(Ca,U++++,Fe+++)(PO4,SO4)•2(H2O) |
| Composition: |
Molecular Weight = 232.32 gm |
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Calcium 10.35 % Ca 14.48 % CaO |
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Uranium 30.74 % U 34.87 % UO2 |
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Iron 2.40 % Fe 3.44 % Fe2O3 |
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Phosphorus 10.00 % P 22.91 % P2O5 |
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Hydrogen 1.74 % H 15.51 % H2O |
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Sulfur 3.45 % S 8.62 % SO3 |
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Oxygen 41.32 % O |
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______ ______ |
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100.00 % 99.83 % = TOTAL OXIDE |
| Empirical Formula: |
Ca0.6U0.3Fe3+0.1(PO4)0.75(SO4)0.25•2(H2O) |
| Environment: |
Fractures and cavities in hydrothermal veins. |
| IMA Status: |
Approved IMA 1983 |
| Locality: |
Wheal Trewavas, England. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Sir Tristram, a figure in the Arthurian legend. |
| Name Pronunciation: |
Tristramite + Pronunciation  |
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