Chemical and physical characteristics of stibnite
Physical properties
Hardness: 2
Specific gravity: 4.6g ∕cm 3
Cleavage: (010) Complete, cleavage surface often has a horizontal polycrystalline double crystal
Fracture: shell-shaped fracture
Color: lead gray, crystal face often with dark blue ochre
Streak: lead gray
Transparency: opaque
Luster: metallic luster
Luminescence: none
Other: brittle, and cold expansion
chemical components:
Sb 2 S 3 , Sb 锑 71.4%, 28.6%; containing a small amount of As, Pb, Ag, Cu, Fe, which is basically a mechanical mixture.
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