Antimony Composition, Crystallization, Structure and Occurrence

Composition. Antimony, whit (at times) small amounts of arsenic, iron or silver.

Crystallization. Hexagonal-rhombohedral. Distinct crystals rare.

Structure. Usually in granular masses showing distinct cleavage; radiated; botryoidal.

Physical Properties. Perfect basal cleavage. H. = 3-3.5. G. = 6.6-6.7.  Metallic luster. Tin-white color. Gray streak.

Tests. Easily an completely volatile. Fusibility 1. When heated on charcoal gives a dense white coating of antimony trioxide. Heated in O. T. gives a white, slowly volatile sublimate of antimony trioxide.

Occurrence. A rare species, found usually in connection with silver veins and associated with arsenic and antimony compounds. Occurs at Sala, Sweden; Andreasberg. Harz Mountains; at Pribram, Bohemia; Allemont, France; Borneo; Chile; South; Ham; Quebec; York Country; New Brunswick; etc.

Use. Minor ore of antimony.