Specimen # 914203

Specimen Locality: La Choyas Mine, Mun. de Aldama, Chihuahua, Mexico

Mineral Description: This is a very interesting specien of chalcedony forming a geode with complex bands, crystals, and “cups” of chalcedony inside of it. The specimen fluoresces bright green under UV light due to the inclusions of trace amounts of Uranium (not enough to be dangerous). Height: 7.8 Width: 7.8 Depth: 6 cm