Hübnerite: Difference between revisions
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Revision as of 21:34, 16 October 2005
Hübnerite is a mineral consisting of Manganese tungstate (chemical formula: MnWO4).
- Molecular weight of 302.79 g/mol. manganese makes up 18.14% of chemical composition, tungsten: 60.72%, oxygen: 21.14%.
- Named after German mineralologist, Adolf Huebner.
- cleavage:[010] Perfect.
- color: Brown, reddish brown, brownish black.
- density: 7.15 g/cm³
- fracture: brittle.
- Mohs hardness: 4.5-between flourite and apatite.
- luster: submetallic.
- streak: red-brown.
- diaphaniety:Transparent to translucent.
- crystalline structure: monoclinic-prismatic.