PbSCubic
Galena
PbS
SulfidesChemical FormulaPbS
Crystal SystemCubic
Mohs Hardness2.5
Specific Gravity7.58
ColorLead gray
LusterMetallic
StreakLead gray
CleavageThree directions at 90
FractureUneven
Occurrence
Found in hydrothermal veins. Primary ore of lead. Very dense for its size.