Acanthite ps Stephanite with Polybasite and Argyrodite
Small Cabinet, 8.8 x 8.1 x 5.1 cm
Santiago mine, Porco, Agua de Castilla, Antonio Quijarro Province, Potosi Department, Bolivia

A peculiar Bolivian sulfide/sulfosalt pseudomorph! This curious small cabinet piece features a myriad of knobby, stacked, malformed clusters of what were stephanite crystals are now almost completely replaced by dark gray, sooty acanthite. This really is a unique specimen from the silver mines in Bolivia and an interesting pseudomorph. Ex. Dr. Werner Paar collection with label that indicates the presence of polybasite, argyrodite, greenockite(?), and galena.

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