Image: <bdi><a href="https://www.wikidata.org/wiki/Q126871368" class="extiw" title="d:Q126871368"><span title="photographer from the United States">Darla Sondrol</span></a></bdi> (CC0)
monoclinicuncommontungstates
Huebnerite
MnWO4
This 8 cm wide sample features dark reddish-brown to black huebnerite crystals, often bladed or tabular, associated with quartz.
Huebnerite Physical Properties
Mohs Hardness
4.5Crystal System
monoclinicLuster
vitreousStreak Color
yellowish-brownCleavage
perfect on {010}Fracture
unevenSpecific Gravity
7.12Colors
dark reddish-brown, blackTransparency
opaqueType Locality
Pima County, Arizona, USAMineral Group
tungstatesUses
ore of tungsten, ore of manganese, collectorAssociated Minerals
quartz, ferberiteRarity
uncommonGeological Context
Huebnerite typically forms in high-temperature hydrothermal veins, often associated with granitic intrusions, and is an end-member of the wolframite solid solution series with ferberite.
