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Alleghanyite Mineral Data
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General Alleghanyite Information
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 Chemical Formula: |
Mn5(SiO4)2(OH)2 |
| Composition: |
Molecular Weight = 492.87 gm |
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Manganese 55.73 % Mn 71.96 % MnO |
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Silicon 11.40 % Si 24.38 % SiO2 |
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Hydrogen 0.41 % H 3.66 % H2O |
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Oxygen 32.46 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Mn2+5(SiO4)2(OH)2 |
| Environment: |
Manganese vein deposits. |
| IMA Status: |
Valid Species (Pre-IMA) 1932 |
| Locality: |
Bald Knob, Alleghany Co., North Carolina, USA. Link to MinDat.org Location Data. |
| Name Origin: |
Named after its locality. |
| Name Pronunciation: |
Alleghanyite + Pronunciation  |
| Synonym: |
ICSD 14253 |
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PDF 43-683 |
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