19jkaa.r ((VOLBORTHITE, TYUYAMUNITE)), RADIOACTIVE, $15 MINIMUM BID, Monument No. 1 Mine, Monument No. 1 channel, Mystery Valley, Mineral Mining District, Navajo Co., Arizona, 3.5 x 3.5 x 2 cm, Cabinet | |
Yellow Tyuyamunite, a Uranium species, covered by uncommon dark green spherical cluster of platey Volborthite crystals, a hydrated copper vanadate |