Orthoclase Mineral Information photos and Facts, gems
Scientific facts about the mineral Orthoclase, including Industrial use and occurances : ORTHOCLASE FELDSPAR MINERAL FACTS : The Gem and Mineral Collector's Photo Gallery by Nevada Outback . Orthoclase Mineral Facts: Chemical Formula: KAlSi 3 O 8 A Potash Feldspar or K-spar. Potassium-aluminium silicate, with Silica 64.7%, alumina …