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Holfertite Mineral Data
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General Holfertite Information
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 Chemical Formula: |
U++++++1.75TiCa0.25 O7.5(H2O)3 |
| Composition: |
Molecular Weight = 649.27 gm |
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Potassium 0.24 % K 0.29 % K2O |
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Calcium 1.67 % Ca 2.33 % CaO |
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Uranium 63.79 % U 76.65 % UO3 |
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Titanium 7.15 % Ti 11.93 % TiO2 |
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Iron 0.34 % Fe 0.49 % Fe2O3 |
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Hydrogen 0.93 % H 8.32 % H2O |
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Oxygen 25.87 % O |
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______ ______ |
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100.00 % 100.02 % = TOTAL OXIDE |
| Empirical Formula: |
U1.74Ti0.97Ca0.27Fe3+0.04K0.04O7.5•3(H2O) |
| Environment: |
Found on hematite and topaz crystals in cavities and fractures in rhyolite. |
| IMA Status: |
Approved IMA 2003 (Dana # Added) |
| Locality: |
Starvation Canyon (Searles Canyon), Thomas Range, Juab Co., Utah, USA Link to MinDat.org Location Data. |
| Name Origin: |
Named for John W. Holfert, claim holder at Starvation (formerly Searle) Canyon. |
| Synonym: |
IMA2003-009 |
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