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.
Leucosphenite: Na4BaTi2O2[B2Si10O28]
Comments: Glassy crystal of leucosphenite in mudstone. Location: Carter Oil Co. Poulson No. 1 Well, Uinta Basin, Duchesne Co, Utah, USA. Scale: Overall: 2 x 1.5 x 2 cm. © Tom Loomis / Dakota Matrix
Comments: Glassy crystal of leucosphenite in mudstone. Location: Uintah Basin, Uintah County, Utah, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species