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.
Polybasite: [Ag9CuS4] [(Ag,Cu)6(Sb,As)2S7]
Comments: Cyclic-twinned polybasite grain embedded in matrix.. Location: The Zaca mine, Alpine Co., California, USA. Scale: Grainsize .75 mm. © Tom Loomis / Dakota Matrix
Comments: Lustrous, metallic steel-gray rosette of polybasite crystals. Location: Guanajuato, Mexico. Scale: 18 x 16 x 8 mm. © Dan Weinrich