Bismuth Composition, Crystallization, Structure and Occurrence

Composition. Bismuth, with sometimes small amounts of arsenic, sulfur, tellurium.

Crystallization. Hexagonal - rhombohedral. Distinct crystals rare.

Structure. Usually laminate an granular, sometimes reticulated or arborescent.

Physical Properties. Basal and rhombohedral elevate. H. = 2-2.5.  G. = 9.8 Sectile. Brittle. Metallic luster. Color silver-white white decided reddish tone. Streak silver-white, shining.

Tests. Fusible at 1. B. B. on charcoal gives metallic globule and yellow to white coating of bismuth oxide. The globule is somewhat malleable but cannot be hammered into as thin a sheet as in the case of lead. Mixed with potassium iodide and sulfur and heated on charcoal gives a brilliant yellow to red coating and under same conditions on a plaster tablet gives a chocolate – brown sublimate whit underlying red. Recognized chiefly by its laminated structure, its reddish silver color and sectillity.

Occurrence. A comparatively rare mineral, occurring usually in connection with ores of silver, cobalt, nickel, lead, and sometimes tin. Wall. England. Important deposits occur in Australia and Bolivia,. With the silver and cobalt minerals at Cobalt, Ontario, Canada; Only sparingly in the United States.

Use. Or of bismuth. The greater part of the bismuth of commerce is produced from the sulphide, bismuthinite, or from other ores that contain a small per cent of the metal.  It is chiefly employs in the manufacture of low – fusing alloys which are used as safety plugs in boilers and in automatic fire sprinklers, etc. Its salts are used in medicine.

Cone crusher capacity charts Typical Ore Minerals Crystallographic Mineralogy and Crystallography Hydrous Sulphates - Gypsum. Selenite Composition & Structure Crusher Electrical Lockout Intermediate Oxides - Spinel Group, Spinel Composition & Structure Identifying Tellurium Minerals Chemical Mineralogy and Groups Gold Mining Companies Canada Tactical Prospecting Gride Power Requirements of Crushers PLANT GRINDING STUDY to measure Efficiency Zinc Section of Lead-Zinc Flowsheet Terms Used in Crusher Operation Celestite Composition, Crystallization & Structure