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Perhamite Mineral Data
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General Perhamite Information
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 Chemical Formula: |
Ca3Al7(SiO4)3(PO4)4(OH)3•16.5(H2O) |
| Composition: |
Molecular Weight = 1,313.51 gm |
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Calcium 9.15 % Ca 12.81 % CaO |
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Aluminum 14.38 % Al 27.17 % Al2O3 |
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Silicon 6.41 % Si 13.72 % SiO2 |
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Phosphorus 9.43 % P 21.61 % P2O5 |
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Hydrogen 2.76 % H 24.69 % H2O |
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Oxygen 57.86 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Ca3Al7(SIO4)3(PO4)4(OH)3•16.5(H2O) |
| Environment: |
Found in a pegmatite vug. |
| IMA Status: |
Approved IMA 1977 |
| Locality: |
Bell Pit, Newry Hill, Newry, Maryland, USA. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Frank C. Perham (1934-), U.S. Geologist and pegmatite miner. |
| Name Pronunciation: |
Perhamite + Pronunciation  |
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