Formula: Ag5-xTe3 (x = 0.24-0.36)
Specific gravity: 8
Colour: Dark lead-grey, bronze-brown to iridescent (tarnished)
Stützite occurs as replacement masses in hydrothermal deposits associated with other
tellurides and sulphides. Associated minerals include
In Kalgoorlie-Boulder Shire, Western Australia, a single specimen has been found of stützite associated with sylvanite (AM 49.325-338).
At the Vatukoula Gold Field, Viti Levu, Fiji, the observed associations are stützite-sylvanite, stützite-tellurium, stützite-tellurium-sylvanite, and stützite-tellurium-coloradoite (AM 49.325-338).
At the type locality, Săcărâmb, Certeju de Sus, Deva, Hunedoara, Romania, stützite was found in a single specimen associated with gold and hessite on quartz (AM 36.458-469).
At the Red Cloud mine, Gold Hill district, Boulder county, Colorado, USA, stützite occurs associated with altaite. Other tellurides from this mine include hessite, petzite and sylvanite (AM 49.325-338).
At the May Day mine, La Plata district, La Plata County, Colorado, USA, stützite is an abundant constituent of telluride replacement masses, and was observed in the associations stützite-sylvanite, stützite-hessite-sylvanite, and stützite-altaite. Sulphide minerals are commonly intergrown with the tellurides and include galena, sphalerite and tetrahedrite–tennantite (AM 49.325-338).
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