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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