Click on thumbnails for a larger image. Please be patient since some of these pages of thumbnail images take some time to load. These mineral photos are copyrighted by their owners and may not be used without permission.
Siegenite: (Ni,Co)3S4
Comments: Equant, dark gray, metallic crystals of siegenite on matrix. Location: LaMotte mine, Fredericktown, Madison County, Missouri, USA. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Siegenite: (Ni,Co)3S4 Cattierite: CoS2
Comments: Pinkish metallic cattierite, intergrown with gray siegenite. Location: Shinkolobwe, Katanga, Shaba, Zaire. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species