Bismuthinite
Chemical Formula	Bi2S3
Species	Sulfides
Crystal System	Orthorhombic
Mohs Scale	2
Specific Gravity	6.8-7.2
Color	Lead-gray to tin-white, with a yellowish or iridescenttarnish.
Streak	Lead grey
Luster	Metallic
Diaphaneity	Opaque
Cleavage	PerfectPerfect on imperfect on
Fracture	Brittle - sectile
Crystal Habit：Slender prismatic to acicular, massive lamellar
Geological Setting：Low to high temperature hydrothermal veins