Chao, Edward C. T. U.S. Geological Survey, Department of the Interior, Reston, Virginia.
Last reviewed:October 2019
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A mineral with the chemical composition MnWO4. Hübnerite (sometimes spelled huebnerite) is the manganese member of the wolframite solid-solution series. It commonly contains small amounts of iron. It occurs in monoclinic, short, prismatic crystals. Fracture is uneven. Luster varies from adamantine to resinous (see illustration). Hardness is 4 on Mohs scale and specific gravity is 7.2. Hübnerite is transparent and yellowish to reddish-brown in color; streak is brown. It is fusible with difficulty. See also: Wolframite
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