General Shibkovite Information
|
 Chemical Formula: |
K(Ca,Mn,Na)2(K2-x,[ ]x)2ZnSi12O30 (x~0.8) |
| Composition: |
Molecular Weight = 1,180.17 gm |
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Potassium 7.29 % K 8.78 % K2O |
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Sodium 0.58 % Na 0.79 % Na2O |
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Calcium 4.41 % Ca 6.18 % CaO |
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Manganese 1.86 % Mn 2.40 % MnO |
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Zinc 16.62 % Zn 20.69 % ZnO |
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Silicon 28.56 % Si 61.09 % SiO2 |
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Oxygen 40.67 % O |
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______ ______ |
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100.00 % 99.93 % = TOTAL OXIDE |
| Empirical Formula: |
K2.2Ca1.3Mn2+0.4Na0.3Zn3Si12O30 |
| Environment: |
Found in a boulder of perialkaline granitic pegmatite in moraine. A member of the Osumilite-Milarite group. |
| IMA Status: |
Approved IMA 1998 (Dana # Added) |
| Locality: |
Dara-i-Pioz glacier, Garmsky District, northern Tajikistan. Link to MinDat.org Location Data. |
| Name Origin: |
Named after two prominent Russian geologists, Viktor Sergeevitch Shibkov (1926-1992) and Nikolai Viktorovitch Shibkov (1951-1991), who both spent their professional lives working on the geology of Soviet Asia. |
| Synonym: |
ICSD 87953 |
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IMA1997-018 |
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PDF 51-1432 |
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