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
Ferberite
FeWO4
This image displays a blocky, black, opaque Ferberite crystal exhibiting a distinct submetallic luster, likely part of a larger specimen or matrix.
Ferberite Physical Properties
Mohs Hardness
4Crystal System
monoclinicLuster
vitreousStreak Color
dark reddish-brown to blackCleavage
perfect on {010}Fracture
uneven to subconchoidalSpecific Gravity
7.45Colors
black, brownish-blackTransparency
opaqueType Locality
Panasqueira, Covilhã, Castelo Branco District, PortugalMineral Group
TungstatesUses
ore of tungsten, collectorAssociated Minerals
quartz, muscovite, cassiterite, arsenopyrite, pyrite, chalcopyrite, sphalerite, fluorite, apatiteRarity
uncommonGeological Context
Ferberite is a primary ore mineral of tungsten, typically forming in high-temperature hydrothermal veins associated with granitic intrusions, often found in greisen and quartz veins.
