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Gerstmannite Mineral Data
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General Gerstmannite Information
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 Chemical Formula: |
(Mg,Mn)2ZnSiO4(OH)2 |
| Composition: |
Molecular Weight = 255.41 gm |
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Magnesium 14.27 % Mg 23.67 % MgO |
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Manganese 10.75 % Mn 13.89 % MnO |
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Zinc 25.60 % Zn 31.87 % ZnO |
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Silicon 11.00 % Si 23.52 % SiO2 |
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Hydrogen 0.79 % H 7.05 % H2O |
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Oxygen 37.58 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Mg1.5Mn2+0.5Zn(SiO4)(OH)2 |
| Environment: |
In a hydrothermal vein cutting franklinite-willemite ore in a metamorphosed stratiform zinc orebody. |
| IMA Status: |
Approved IMA 1977 |
| Locality: |
Sterling Hill, Ogdensburg, Sussex Co., New Jersey, USA. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Ewald Gerstmann (1918- ), mineral collector of Franklin, New Jersey, USA. |
| Name Pronunciation: |
Gerstmannite + Pronunciation  |
| Synonym: |
ICSD 100142 |
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PDF 29-867 |
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