LithoCat

MineralFerberite
FormulaFeWO4
Crystal FormMonoclinic/Prismatic [2/m]
Cleavage[010] Perfect
ColorBlack; dark brown in transmitted light
Density7.6 – 7.6 g/cm3
DiaphaneityOpaque
FractureIrregular/Uneven
Hardness4.0 - 4.5
LustreAdamantine, Metallic, Sub-Metall
StreakBrownish black to black
Dana 8 Class4.1.1.2
Strunz ClassIV/D.16-20
Mindatmindat.org
WebMineralWebMineral
ID175