LithoCat

MineralGeorgerobinsonite
FormulaPb4(CrO4)2(OH)2FCl
Crystal FormOrthorhombic/Dipyramidal [2/m 2/m 2/m]
CleavageNone Observed
ColorOrange-red
Density6.2 g/cm3
DiaphaneityTransparent
FractureIrregular/Uneven
Hardness2.5 - 3.0
LustreAdamantine
StreakPale orange
Type Loc.Mammoth-Saint Anthony Mine, St. Anthony deposit, Tiger, Mammoth Dist., Pinal Co., AZ, USA
Strunz Class7.FB.05
Mindatmindat.org
ID498