Stützite
Stützite or stuetzite is a silver telluride mineral with formula: Ag5−xTe3 (with x = 0.24 to 0.36) or Ag7Te4. It was first described in 1951 from a museum specimen from Săcărâmb mine, Sacarimb, Romania. It was named for Austrians, Austrian mineralogist Andreas Stütz, Andreas Xaverius Stütz (1747–1806). It occurs with other Sulfide mineral, sulfide and telluride minerals in hydrothermal ore occurrences. Associated minerals include sylvanite, hessite, altaite, petzite, empressite, native tellurium, native gold, galena, sphalerite, colusite, tennantite and pyrite. References

Telluride minerals Silver minerals Hexagonal minerals Minerals in space group 191 Minerals described in 1951 {{mineral-stub ...
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Hessite
Hessite is a mineral form of silver telluride, disilver telluride (Ag2Te). It is a soft, dark grey telluride mineral which forms monoclinic crystals. It is named after Germain Henri Hess (1802–1850). Hessite is found in the US in Eagle County, Colorado and in Calaveras County, California and in many other locations. Stützite (Ag7Te4) and empressite (AgTe) are related silver telluride minerals. References

Silver minerals Telluride minerals Monoclinic minerals Minerals in space group 14 Minerals described in 1843 {{Mineral-stub ...
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