Allargentum

antimonide

silver

Formula: Ag1-xSbx (x=0.09 to 0.16)
Antimonide
Specific gravity: 10.0
Hardness: 3½
Colour: Silver
Environments

Hydrothermal environments

Allargentum occurs in high grade silver-antimony ores, associated with breithauptite, domeykite, dyscrasite, kutinaite, silver and stephanite (Mindat, HOM, Dana, Webmin).

Common impurities: Hg,Ni,As

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