Sb2S3Orthorhombic
Stibnite
Sb2S3
SulfidesChemical FormulaSb2S3
Crystal SystemOrthorhombic
Mohs Hardness2
Specific Gravity4.63
ColorLead gray to black
LusterMetallic
StreakLead gray
CleavageOne direction
FractureUneven
Occurrence
Primary ore of antimony. Striking needle-like crystals. Found in hydrothermal veins.