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Mushistonite: (Cu,Zn,Fe)Sn++++(OH)6 Kesterite: Cu2(Zn,Fe)SnS4
Comments: Sharp, kesterite crystal, greenish in color due to a mushistonite coating with clear, prismatic beryl crystals.
Location: Xue Bao Diang Mountains, north of Pingwu, Sichuan Province, China.
Scale: Crystal size 1 cm.
© Dan Weinrich
Comments: Green crystalline mushistonite coatings on quartz.
Location: Etta Mine, Keystone, Pennington County, South Dakota, USA.
Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species