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.
Hyalophane: (K,Ba)Al(Si,Al)3O8
Comments: Twinned crystal of hyalophane slightly yellow from iron stains. Location: Sarajevo, Bosnia, Yugoslavia. Scale: 4 x 3 cm. © Isaias Casanova / IC Minerals