Ferberite
ID: 71
Ferberite
Chemical Formula
FeWO₄
Hardness (Mohs)
4 - 4.5
Crystal System
Monoclinic
Streak
Brownish black to black
Luster
Metallic
Diaphaneity
Opaque
Color
Black; dark brown in transmitted light
Density
7.58
Fun Facts
Ferberite is the iron endmember of the manganese–iron wolframite solid solution series. Tenacity: Brittle.