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Shirokshinite Mineral Data
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General Shirokshinite Information
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 Chemical Formula: |
K(NaMg2)Si4O10F2 |
| Composition: |
Molecular Weight = 421.03 gm |
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Potassium 9.29 % K 11.19 % K2O |
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Sodium 5.46 % Na 7.36 % Na2O |
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Magnesium 11.55 % Mg 19.15 % MgO |
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Silicon 26.68 % Si 57.08 % SiO2 |
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Oxygen 38.00 % O |
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Fluorine 9.02 % F 9.02 % F |
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- %
F -3.80 % -O=F2 |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
KNaMg2Si4O10F2 |
| Environment: |
Occurs on microcline and kupletskite in cavities within a hyperalkaline pegmatite. (mica group; structure) |
| IMA Status: |
Approved IMA 2003 (Dana # Added) |
| Locality: |
Khibiny massif, Kola Peninsula, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Nikolay V. Shirokshin (1809-), Russian geologist who in 1835 published the first geological data for the Khibiny massif. |
| Synonym: |
IMA2001-063 |
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