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Tsepinite-Sr Mineral Data
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General Tsepinite-Sr Information
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 Chemical Formula: |
(Sr,Ba,K)(Ti,Nb)2(Si4O12)(OH,O)2•3(H2O) |
| Composition: |
Molecular Weight = 572.95 gm |
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Potassium 1.09 % K 1.32 % K2O |
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Barium 3.83 % Ba 4.28 % BaO |
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Sodium 0.44 % Na 0.59 % Na2O |
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Strontium 4.28 % Sr 5.06 % SrO |
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Calcium 0.63 % Ca 0.88 % CaO |
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Titanium 11.03 % Ti 18.40 % TiO2 |
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Niobium 11.19 % Nb 16.01 % Nb2O5 |
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Aluminum 0.09 % Al 0.18 % Al2O3 |
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Zinc 0.23 % Zn 0.28 % ZnO |
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Iron 0.10 % Fe 0.13 % FeO |
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Silicon 19.51 % Si 41.74 % SiO2 |
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Hydrogen 1.24 % H 11.12 % H2O |
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Oxygen 46.33 % O |
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______ ______ |
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100.00 % 99.99 % = TOTAL OXIDE |
| Empirical Formula: |
Sr0.28Ba0.16K0.16Na0.11Ca0.09Zn0.02Ti1.32Nb0.69Fe2+0.01Si3.98Al0.02O12(OH)1.89O0.11�2.59(H2O) |
| Environment: |
Found in hydrothermal paragenesis in cavities of nepheline-syenite pegmatite. Labuntsovite group (the vuoriyarvite subgroup) |
| IMA Status: |
Approved IMA 2004 (Dana # Added) |
| Locality: |
Eveslogchorr Mountain, Khibiny massif, Kola Peninsula, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
Named as the Sr analog of tsepinite--Na, -K, and -Ca. |
| Synonym: |
IMA2004-008 |
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