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Uramarsite Mineral Data
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General Uramarsite Information
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 Chemical Formula: |
(NH4,H3O)2(UO2)2(AsO4,PO4)2•6H2O |
| Composition: |
Molecular Weight = 935.42 gm |
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Sodium 0.22 % Na 0.30 % Na2O |
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Uranium 51.40 % U 58.31 % UO2 |
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Arsenic 9.77 % As 14.99 % As2O5 |
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Phosphorus 2.58 % P 5.92 % P2O5 |
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Hydrogen 0.50 % H - % Calc as (NH4)2O |
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Hydrogen 1.55 % H 13.83 % H2O |
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Nitrogen 1.72 % N 3.20 % (NH4)2O |
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Oxygen 32.26 % O |
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______ ______ |
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100.00 % 96.54 % = TOTAL OXIDE |
| Empirical Formula: |
(NH4)1.15(H3O)0.72(Na)0.09(UO2)2.022(As)0.612(P)0.39 |
| Environment: |
Discovered in the supergene zone of the Bota-Burum U-Mo deposit. Meta-autunite group. Arsenate analog of uramphite. |
| IMA Status: |
Approved IMA 2005 (Dana # Added) |
| Locality: |
Bota-Burum uranium deposit, Kazakhstan. Link to MinDat.org Location Data. |
| Name Origin: |
Named for its composition of uranium, ammonium, and arsenic. |
| Synonym: |
IMA2005-043 |
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