Mineral description : Silver

Mineral class	Elements : Copper-silver-gold group
Chemical formula	Ag
Crystal system	Cubic
Habitus	As flakes, threads or branches, rarely as octaedric crystals.
Cleavage	None, malleable. Hooky fracture.
Hardness	2.5-3
Density	10-12
Color	Silvery white, but often with a black tarnish.
Streak	Silvery white.
Luster	Metallic
Description	Used mainly for ornaments, coins, and silver jewelry as well as some medicinal purposes such as bactericides and antiseptics. Other usage is in photographics and electronics.
Occurance	Occurs in low tempered hydrothermal veins with calcite. In high tempered ore veins with sulfides and also as a secondary mineral in silver rich ores.
Associates	Calcite, sulfides.
Notes	Good electrical conductor. Easily dissolved in nitric acid, gives a white yolk with natrium chloride.
Locations	Harmsarvsgruvan, Grycksbo, Dalarna. With achantite in quartsite. Åmmebergsgruvan, Örebro län. In fractures in ore bearing leptite. Svärdsjögruvan, Kopparbergs län. Slädekärr mine, Dalsland. Vassvik mine, Dalsland.

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