Hübnerite: Difference between revisions
wikademia>Jaraalbe Manganese mineral cat |
wikademia>Vsmith redo & expand |
||
| Line 1: | Line 1: | ||
'''Hübnerite''' is a mineral consisting of | '''Hübnerite''' or '''hubnerite''' is a mineral consisting of [[manganese]] [[tungstate]] (chemical formula: MnWO<sub>4</sub>). It is the manganese endmember of the manganese - iron [[wolframite]] [[solid solution]] series. | ||
It forms reddish brown to black [[monoclinic]] prismatic submetallic crystals. The crystals are typically flattened and occur with fine striations. It has a high [[specific gravity]] of 7.15 and a [[Mohs hardness]] of 4.5. It is transparent to translucent with perfect cleavage. [[Refractive index]] values are nα=2.170 - 2.200, nβ=2.220, and nγ=2.300 - 2.320. | |||
Typical occurrence is in association with high-temperature [[hydrothermal]] vein deposits and altered [[granite]]s with [[greisen]], granite [[pegmatite]]s and in alluvial deposits. | |||
It was first described in 1865 and named after the German mineralologist, [[Adolf Huebner]]. | |||
==References== | |||
*[http://mineral.galleries.com/minerals/sulfates/huebneri/huebneri.htm mineral galleries] | *[http://mineral.galleries.com/minerals/sulfates/huebneri/huebneri.htm mineral galleries] | ||
*[http://webmineral.com/data/Hubnerite.shtml webmineral.com] | *[http://webmineral.com/data/Hubnerite.shtml webmineral.com] | ||
*[http://www.mindat.org/min-1940.html Mindat data] | |||
{{mineral-stub}} | {{mineral-stub}} | ||
Revision as of 17:22, 3 February 2006
Hübnerite or hubnerite is a mineral consisting of manganese tungstate (chemical formula: MnWO4). It is the manganese endmember of the manganese - iron wolframite solid solution series. It forms reddish brown to black monoclinic prismatic submetallic crystals. The crystals are typically flattened and occur with fine striations. It has a high specific gravity of 7.15 and a Mohs hardness of 4.5. It is transparent to translucent with perfect cleavage. Refractive index values are nα=2.170 - 2.200, nβ=2.220, and nγ=2.300 - 2.320.
Typical occurrence is in association with high-temperature hydrothermal vein deposits and altered granites with greisen, granite pegmatites and in alluvial deposits.
It was first described in 1865 and named after the German mineralologist, Adolf Huebner.
References
 | This article about a specific mineral or mineraloid is a stub. You can help Wikipedia by expanding it. |