LithoCat

MineralMottramite
FormulaPb(Cu,Zn)[OH|VO4]  
Crystal FormOrthorhombic/Dipyramidal [2/m 2/m 2/m]
CleavageNone
ColorGrass-green, olive-green, yellow-green, siskin-green, blackish brown, nearly black
Density5.9 – 6.2 g/cm3
DiaphaneityTransparent, Opaque
FractureIrregular/Uneven, Sub-conchoidal
Hardness3.0 - 3.5
LustreGreasy
StreakYellowish green
Dana 8 Class41.5.2.2
Strunz ClassVII/B.27-30
Mindatmindat.org
WebMineralWebMineral
ID169