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Tschermigite: (NH4)Al(SO4)2·12(H2O)
Comments: Clear crystal of tschernichite in a vug. Location: Goble, Colombia County, Oregon, USA. Scale: Not Given. © Thomas Witzke / Abraxas-Verlag
Tschermigite: (NH4)Al(SO4)2·12(H2O) Berndtite: SnS2
Comments: Yellow crystalline berndtite on tschermigite. Location: Shamokin, Northumberland County, Pennsylvania, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species