Fluorescent Mineral Database Back to Platte County, Wyoming, USAGuernsey, Platte County, Wyoming, USAYoungite from WyomingYoungite - Youngite Cave, Guernsey, Platte Co., WyomingYoungite, Guernsey, WyomingYoungite, from the Youngite Caves, Guernsey, Wyoming FMDB Home Page Submit a new specimen! My Collection
