| References: | Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 107; Lindgren, W. (1926), USGS Bull. 782: 26, 27, 28-29, 31, 32, 61-78; Reber, L.E., Jr. (1938), AZ Bur. of Mines Bull. 145: 49; Univ. of AZ Bull. 41 (1916-17), Mineralogy of Useful Minerals in AZ: 25, 27, 56; Galbraith, F.W. (1947), AZ Bur. of Mines Bull. 153, Minerals of AZ: 9, 12, 15, 16, 20, 24; Galbraith, F.W. & Brennan (1959), Minerals of AZ: 63; Lausen, C. (1928), Hydrous sulphates formed under fumerolic conditions at the United Verde mine, AmMin: 13: 203-229. |