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Tomichite Mineral Data
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General Tomichite Information
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 Chemical Formula: |
(V,Fe)4Ti3AsO13(OH) |
| Composition: |
Molecular Weight = 647.82 gm |
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Titanium 22.17 % Ti 36.99 % TiO2 |
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Vanadium 30.67 % V 45.12 % V2O3 |
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Iron 0.86 % Fe 1.23 % Fe2O3 |
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Arsenic 11.57 % As 17.74 % As2O5 |
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Hydrogen 0.16 % H 1.39 % H2O |
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Oxygen 34.58 % O |
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______ ______ |
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100.00 % 102.47 % = TOTAL OXIDE |
| Empirical Formula: |
V3+3.9Fe3+0.1Ti3AsO13(OH) |
| Environment: |
In a specimen from a hydrothermal gold deposit. |
| IMA Status: |
Approved IMA 1979 |
| Locality: |
Kalgoorlie, Western Australia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Stephan A. Tomich (1914-), consulting geologist who discovered the mineral. |
| Name Pronunciation: |
Tomichite + Pronunciation  |
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