Tapiolite
From Wikipedia, the free encyclopedia
Tapiolite [(Fe, Mn)(Nb, Ta)2O6] is a black mineral that is an ore of niobium and tantalum. It has a submetallic luster and a high specific gravity and is a niobate of iron and manganese, containing tantalate of iron.
The mineral was named in 1863 after the forest god Tapio of Finnish mythology, and the original tapiolite material came from Sukula, Tammela, Tavastia Proper, Finland.[1][2]
Tapiolite is very close to columbite and tantalite. Those minerals have the same chemical composition, but different crystal symmetry orthorhombic for tantalite or columbite and tetragonal for tapiolite.[3]
[edit] See also
[edit] References
- ^ mindat Tapiolite
- ^ webmineral Tapiolite
- ^ P. Cerny et al. "The tantalite-tapiolite gap: natural assemblages versus experimental data" Canadian Mineralogist 30 (1992) 587 free download
| This article about a specific oxide mineral is a stub. You can help Wikipedia by expanding it. |
|
||||||||||||||||||||||||||||
