16hhph.r ((COQUIMBITE, HALOTRICHITE)), $35 MINIMUM BID, Dexter No. 7 Mine, Calf Mesa, San Rafael Mining District, Emery Co., Utah, 9 x 5 x 2 cm, Cabinet | |
Classic Utah specimen with hexagonal prisms of lustrous purple Coquimbite and white fibrous Halotrichite. Coquimbite is a sulphate species and like all sulphates is water soluble. So keep dry. In humid environments storing in a ziplock bag works well |