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Mourite: U++++Mo++++++5O12(OH)10 Iriginite: (UO2)(Mo++++++2O7)·3(H2O)
Comments: Purple to violet sub-metallic mourite coatings with yellow iriginite.
Location: 'North Caucasus', probably Kyzylsai Deposit, Chu-Ili Mountains, Balkhash, Zezkazgan, Kazakhstan.
Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species