tantite
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Tantite is a rare tantalum oxide mineral with formula: Ta2O5. Tantite forms transparent microscopic colorless triclinic - pedial crystals with an adamantine luster. It has a Mohs hardness of 7 and a high specific gravity of 8.45. Chemical analyses show minor inclusion (1.3%) of niobium oxide.
Wikidata facts
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- Strunz 8th edition (series ID, updated)
- IV/E.01
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 4.EA.05
- Nickel-Strunz 9th edition (updated 2009)
- 4.EA.05
- chemical formula
- Ta₂O₅
- IMA Mineral Symbol
- Tan
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Tantite is a rare tantalum oxide mineral with formula: Ta2O5. Tantite forms transparent microscopic colorless triclinic - pedial crystals with an adamantine luster. It has a Mohs hardness of 7 and a high specific gravity of 8.45. Chemical analyses show minor inclusion (1.3%) of niobium oxide.
It was first described in 1983 for an occurrence in a pegmatite in the Kola peninsula, Russia. It has also been reported from a pegmatite complex in Florence County, Wisconsin. Associated mineral species include elbaite, lepidolite, spodumene, columbite-tantalite, wodginite, and microlite.