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Rockbridgeite Mineral Data
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General Rockbridgeite Information
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 Chemical Formula: |
(Fe++,Mn)Fe+++4(PO4)3(OH)5 |
| Composition: |
Molecular Weight = 648.96 gm |
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Manganese 2.12 % Mn 2.73 % MnO |
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Iron 40.88 % Fe 8.30 % FeO / 49.21 % Fe2O3 |
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Phosphorus 14.32 % P 32.81 % P2O5 |
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Hydrogen 0.78 % H 6.94 % H2O |
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Oxygen 41.91 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Fe2+0.75Mn2+0.25Fe3+4(PO4)3(OH)5 |
| Environment: |
Alteration product of triphylite and other manganese phosphates. Forms a series with frondelite. |
| IMA Status: |
Valid Species (Pre-IMA) 1949 |
| Locality: |
South Mountain, near Midvale, Rockbridge County, Virginia, USA. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
| Name Pronunciation: |
Rockbridgeite + Pronunciation  |
| Synonym: |
Andrewsite |
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ICSD 34829 |
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PDF 22-356 |
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