Ores of Antimony

Stibnite, Sb₂S₃, Sb . 71, S . 29.—[A]H = 2, G = 4.52-4.62. Of lead-gray color and metallic lustre. Consists of a large number of needle-shaped crystals. Brittle. Fuses in candle flame. In an ignition tube yields a sublimate of sulphur. On Ch. before the Bp. it is volatilized, giving antimony coating and tinges the flame pale blue.

[A] H = Hardness, G = Specific Gravity.