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Tsugaruite: Pb4As2S7
Comments: Brown-gray fibrous spherical tsugaruite on matrix. Location: Yunosawa Mine, Aomori, Japan. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Comments: Dark gray veinlet of tsuraruite in matrix. Location: Yunosawa mine, Tsugaru District, Aomori Prefecture, Japan. Scale: Picure size 3x2 cm. © Dave Barthelmy