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Willemseite Mineral Data
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General Willemseite Information
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 Chemical Formula: |
(Ni,Mg)3Si4O10(OH)2 |
| Composition: |
Molecular Weight = 456.63 gm |
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Magnesium 3.99 % Mg 6.62 % MgO |
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Silicon 24.60 % Si 52.63 % SiO2 |
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Nickel 28.92 % Ni 36.80 % NiO |
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Hydrogen 0.44 % H 3.95 % H2O |
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Oxygen 42.05 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Ni2.25Mg0.75Si4O10(OH)2 |
| Environment: |
Massive, fine-grained material. |
| IMA Status: |
Approved IMA 1970 |
| Locality: |
Scotia talc mine, Bon Accord, Barberton district, Transvaal, South Africa. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Johannes Willemse (1909-?), geologist University of Pretoria, South Africa. |
| Name Pronunciation: |
Willemseite + Pronunciation  |
| Synonym: |
Pimelite - (Mg, H20) |
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