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Grayite Mineral Data
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General Grayite Information
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 Chemical Formula: |
(Th,Pb,Ca)PO4•(H2O) |
| Composition: |
Molecular Weight = 318.38 gm |
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Calcium 1.26 % Ca 1.76 % CaO |
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Thorium 43.73 % Th 49.76 % ThO2 |
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Phosphorus 9.73 % P 22.29 % P2O5 |
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Hydrogen 0.63 % H 5.66 % H2O |
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Lead 19.52 % Pb 21.03 % PbO |
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Oxygen 25.13 % O |
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______ ______ |
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100.00 % 100.50 % = TOTAL OXIDE |
| Empirical Formula: |
Th0.6Pb0.3Ca0.1(PO4)•(H2O) |
| Environment: |
Lithium pegmatites. |
| IMA Status: |
Valid Species (Pre-IMA) 1957 |
| Locality: |
Gooddays mine, Mtoko, and the Mahaka claim, Wedza, Zimbabwe. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Anton Gray, mining engineer, advisor to U. K. Atomic Energy Authority. |
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