| References: | Peterson, Nels P. & Swanson (1956), USGS Bull. 1027-H, Geology of the Christmas Copper Mine, Gila Co., AZ: 351, 363; Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 116, 284; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 39. |