Hubnerite

Formula: MnWO4

Name: Named in 1865 by Eugene N. Riotte  for Friedrich Adolph Hübner, German mining engineer and metallurgist from Freiberg, Saxony.

Type Locality: Erie and Enterprize veins, Ellsworth Mine, Ellsworth, Ellsworth Mining District (Mammoth Mining District), Nye County, Nevada, USA

Color: Yellow-brown, reddish-brown, blackish brown, black, red (rare)

Lustre: Adamantine, Resinous, Metallic

Hardness: 4 – 4½

Density: 7.12 – 7.18

Crystal System: Monoclinic

Member of: Wolframite Group, Ferberite-Hübnerite series