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Gerasimovskite Mineral Data
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General Gerasimovskite Information
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 Chemical Formula: |
(Mn,Ca)(Nb,Ti)5O12•9(H2O) (?) |
| Composition: |
Molecular Weight = 764.66 gm |
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Calcium 1.05 % Ca 1.47 % CaO |
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Titanium 15.65 % Ti 26.12 % TiO2 |
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Manganese 5.75 % Mn 7.42 % MnO |
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Niobium 30.37 % Nb 43.45 % Nb2O5 |
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Hydrogen 2.40 % H 21.44 % H2O |
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Oxygen 44.78 % O |
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______ ______ |
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100.00 % 99.90 % = TOTAL OXIDE |
| Empirical Formula: |
Mn2+0.8Ca0.2Nb2.5Ti2.5O12.3•9.1(H2O) |
| Environment: |
Secondary mineral formed from late-stage hydrothermal alteration of Nb-Ti minerals. |
| IMA Status: |
Valid Species (Pre-IMA) 1957 |
| Locality: |
Mts. Punkaruaiv, Karnasurt, Nepkhe, and Alluaiv, in the Lovozero massif, Kola Peninsula, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Vasily I. Gerasimovskii (1911-1979), Russian mineralogist and geochemist who discovered many new minerals at Lovozero. |
| Name Pronunciation: |
Gerasimovskite + Pronunciation  |
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