Variscite

Formula: AlPO4.2H2O  Orthorhombic Description: Variscite from Clay Canyon, Fairfield, Utah. From the mineral collection of Brigham Young University Department of Geology, Provo, Utah, Mineral Specimens 1162. Courtesy of the U.S. Geological Survey Denver Library Photographic Collection. (Photo by …

Wavellite

Formula: Al3(PO4)2(OH,F)3.5H2O Orthorhombic Description:Wavellite forms as a groundwater precipitate in aluminous or ferruginous sedimentary rocks, a product of low-grade metamorphism of such rocks or in hydrothermal veins.JACKSON COUNTY: Wavellite occurs in the Eau Claire Sandstone at several …