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Hubnerite

Hübnerite (Hubnerite) is a manganese-tungsten oxide mineral in the wolframite series. The mineral is distinct for its black-red color, high specific gravity, and cleavage. Like other minerals in the wolframite series, Hübnerite is comprised of imperfect tetrahedral and octahedral crystal units.

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Properties

Mineral Class

Oxides

Hardness

4 - 4.5

Crystal System

Monoclinic

Luster

Metallic, Adamantine

Chemical Formula

MnWO4

Streak

Reddish-Brown

Uses & Applications

In addition to collectors' value, the industrial metal Tungsten is extracted from Hubnerite.

Associated Minerals

  • Arsenopyrite

  • Fluorite

  • Molybdenite

  • Rhodochrosite

  • Topaz

  • Tourmaline

Notable Localities

The largest specimens of Hubnerite originate from several Peruvian localities. Red-tinted crystals occur in the Yaogangxian Mine of China.

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Varieties

Additional Resources

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Properties
Uses & Applications
Associated Minerals
Notable Localities
Varieties
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