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Comments: Gray platy metallic crystalline matildite in white quartz.
Location: Sullivan Mountain, Montezuma District, Summit County, Colorado, USA.
Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species
Matildite: AgBiS2 Bismuth: Bi Bismuthinite: Bi2S3
Comments: SEM image of native Bi replaced by bismuthinite and matildite. Black areas represent gangue minerals. (CanMin, v43:899).
Location: Uranium deposit at Niederschlema-Alberoda, Germany.
Scale: See Image.
© Canadian Mineralogist