Dyscrasite

minerals

silver

pyrargyrite

stibarsen

Formula: Ag3+xSb1-x (x~0.2)
Antimonide
Specific gravity: 9.712
Hardness: 3½ to 4
Streak: Silver-white
Colour: Silver-white
Environments

Hydrothermal environments

Dyscrasite occurs in hydrothermal veins, especially nickel-cobalt-silver-arsenic veins (Mindat), with other silver minerals both as a primary and as a secondary mineral. Associated minerals include silver, pyrargyrite, acanthite, stromeyerite, tetrahedrite, stibarsen, galena, calcite and baryte (HOM, Mindat).

Localities

At Pribram, Bohemia-Czechoslovakia, silver pseudomorphs after dyscrasite have been found (KL p117).

The type locality is the Wenzel mine, Frohnbach valley, Oberwolfach, Ortenaukreis, Freiburg, Baden-Württemberg, Germany.

Common impurities: Hg

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