RockVault
Huebnerite

Image: <bdi><a href="https://www.wikidata.org/wiki/Q56247090" class="extiw" title="d:Q56247090"><span title="mineral collector and dealer">Robert M. Lavinsky</span></a></bdi> (CC BY-SA 3.0)

monoclinicuncommonTungstates

Huebnerite

MnWO₄

This specimen features several reddish-brown to dark brown, blade-like prismatic crystals with a submetallic luster, forming a radiating or parallel growth.

Huebnerite Physical Properties

Mohs Hardness

4.5

Crystal System

monoclinic

Luster

vitreous

Streak Color

yellowish-brown to reddish-brown

Cleavage

perfect on {010}

Fracture

uneven

Specific Gravity

7.12

Colors

reddish-brown, brownish-red, blackish-red

Transparency

translucent

Type Locality

Pasto Bueno District, Pallasca Province, Ancash Department, Peru

Mineral Group

Tungstates

Uses

ore of tungsten, collector

Associated Minerals

quartz, cassiterite, fluorite, scheelite, muscovite

Rarity

uncommon

Geological Context

Huebnerite typically forms in high-temperature hydrothermal veins associated with granitic intrusions, often found in pegmatites and greisens. It is an important ore mineral for tungsten.