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Galaxite: (Mn,Mg)(Al,Fe+++)2O4 Alleghanyite: Mn5(SiO4)2(OH)2
Comments: Black granular galaxite with reddish alleghanyite and white kutnohorite. Location: Bald Knob, Alleghany County, North Carolina, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species