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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.


  • Mindat with location data Accessed March 31, 2006.
  • Webmineral data Accessed March 31, 2006.
  • Wisconsin minerals Accessed March 31, 2006.
  • American Mineralogist data sheet PDF Accessed March 31, 2006.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Tantite". A list of authors is available in Wikipedia.
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