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Grantsite: Na4CaxV++++2xV+++++12-2xO32·8(H2O) Tyuyamunite: Ca(UO2)2V2O8·5-8(H2O)
Comments: Dark olive green waxy coatings of grantsite with greenish-yellow tyuyamunite and sandstone. Location: F-33 Mine, near Grants, Valencia County, New Mexico, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species