Fluorescent Mineral Database Back to Wyoming, USAPlatte County, Wyoming, USAGuernseyYoungite from WyomingFluorescent and Phosphorescent Calcite with Fluorescent Quartz from East Gray's Quarry, Glendo, Platte County, WyomingYoungite - Youngite Cave, Guernsey, Platte Co., WyomingYoungite, Guernsey, WyomingYoungite, from the Youngite Caves, Guernsey, Wyoming FMDB Home Page Submit a new specimen! My Collection
