Tungstite
Hydroxide mineral
(repeating unit)H-M symbol: (2/m 2/m 2/m)
Tungstite is a hydrous tungsten oxide mineral with formula: WO3·H2O. It is a secondary mineral formed by the weathering of other tungsten containing minerals. It crystallizes in the orthorhombic system in translucent yellow to yellow green masses. It is clay-like with Mohs hardness of 2.5 and a specific gravity of 5.5.
It was first described in 1868 for an occurrence near Trumbull, Connecticut at the Hubbard Tungsten Mine at Long Hill.
References
- ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
- Mindat with location data
- Webmineral
- Handbook of mineralogy
Wikimedia Commons has media related to Tungstite.
Wikisource has the text of the 1921 Collier's Encyclopedia article Tungstite.
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- Hydrokenoelsmoreite
- Ferberite
- Hübnerite
- Raspite
- Russellite
- Scheelite
- Stolzite
- Tungstite
- Wolframite
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