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Sphalerite is a sulfide mineral with the chemical formula (Zn, Fe)S. [5] It is the most important ore of zinc . Sphalerite is found in a variety of deposit types, but it is primarily in sedimentary exhalative , Mississippi-Valley type , and volcanogenic massive sulfide deposits.
Sphalerite is also distinctive in being moderately heavy for its size and having six different planes of cleavage. Sphalerite is the most important zinc ore mineral. Zinc produced from sphalerite is used for many purposes, including mixing with copper to produce brass, rust protection of iron & steel, and for making modern American pennies ...
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English: Sphalerite (Blenda acaramelada) faceted, Áliva, Camaleño, Cantabria (Spain), llamada Etoile d'Asturies, property of Lausanne Cantonal Museum of Geology 163,4 ct. Photo Saiko, modificado. Date
English: Galena, Sphalerite, Marcasite Locality: Viburnum Trend District, Reynolds County, Missouri, USA (Locality at mindat.org) Cubes of galena to 1.5 cm on a matrix of sphalerite, with a ball of sparkly marcasite in one place. A classic Viburnum Trend combination - from the collection of Ed Ruggiero. 9.6 x 6.2 x 5.7cm
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It occurs in oxidized veins containing galena, sphalerite and pyrite. Associated secondary minerals include cerussite, phoenicochroite, vauquelinite, willemite, wulfenite, galena, sphalerite, pyrite, tennantite and chalcopyrite. [2] It has been reported from several mining districts in Arizona and one in Nevada.
The zinc in sphalerite is also used to produce brass. This sample was extracted in Creede, Colorado, and features black tetrahedral crystals of sphalerite up to 8 mm (0.31 in) in size, with minor chalcopyrite and calcite, in a 4.5 cm × 3.0 cm × 2.0 cm (1.77 in × 1.18 in × 0.79 in) matrix.