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Stibiomicrolite Mineral Data
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General Stibiomicrolite Information
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 Chemical Formula: |
(Sb,Ca,Na)2(Ta,Nb)2(O,OH)7 |
| Composition: |
Molecular Weight = 538.04 gm |
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Sodium 2.14 % Na 2.88 % Na2O |
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Calcium 5.21 % Ca 7.30 % CaO |
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Tantalum 43.72 % Ta 53.38 % Ta2O5 |
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Niobium 12.09 % Nb 17.29 % Nb2O5 |
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Antimony 15.84 % Sb 18.96 % Sb2O3 |
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Hydrogen 0.19 % H 1.67 % H2O |
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Oxygen 20.82 % O |
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______ ______ |
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100.00 % 101.49 % = TOTAL OXIDE |
| Empirical Formula: |
Sb0.7Ca0.7Na0.5Ta1.3Nb0.7O6(OH) |
| Environment: |
Replacing stibiotantalite, in the lithium-rich albite unit of a complex granite pegmatite. |
| IMA Status: |
Valid Species (Pre-IMA) 1938 |
| Locality: |
Varutrask pegmatite, 15 km norhtwest of Skelleftea, Vasterbotten, Sweden. Link to MinDat.org Location Data. |
| Name Origin: |
Named for antimony (STIBIum) in the composition and membership in the microlite subgroup of the pyrochlore group. |
| Name Pronunciation: |
Stibiomicrolite + Pronunciation  |
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