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.
Clintonite: Ca(Mg,Al)3(Al3Si)O10(OH)2
Comments: Several interconnected platy crystals of black clintonite variety xanthophyllite on vuggy matrix. Location: Green Monster Mountain, Prince of Wales Island, Prince of Wales-Outer Ketchikan Co., Alaska, USA. Scale: 4x3x2 cm. © John Betts - Fine Minerals