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Tsumgallite Mineral Data
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General Tsumgallite Information
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 Chemical Formula: |
GaO(OH) |
| Composition: |
Molecular Weight = 100.05 gm |
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Zinc 0.65 % Zn 0.81 % ZnO |
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Gallium 59.93 % Ga 80.56 % Ga2O3 |
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Iron 2.79 % Fe 3.59 % FeO |
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Silicon 0.56 % Si 1.20 % SiO2 |
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Germanium 2.90 % Ge 4.18 % GeO2 |
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Hydrogen 1.02 % H 9.09 % H2O |
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Oxygen 32.14 % O |
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______ ______ |
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100.00 % 99.44 % = TOTAL OXIDE |
| Empirical Formula: |
Ga0.86Fe2+0.05Ge0.04Si0.02Zn0.01O(OH)1.01 |
| Environment: |
Associated in vugs in specimens of tennanite-germanite ore. Isostructural with goethite. |
| IMA Status: |
Approved IMA 2003 (Dana # Added) |
| Locality: |
Tsumeb mine, Tsumeb, Namibia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the Tsumeb mine and the composition (GALLium). |
| Synonym: |
IMA2002-011 |
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