| References: | Peterson, Nels P. & Swanson (1956), USGS Bull. 1027-H, Geology of the Christmas Copper Mine, Gila Co., AZ: 363; Perry, D.V. (1969), Skarn genesis at the Christmas mine, Gila Co., AZ, Econ.Geol.: 64: 255-270; Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 116, 204, 208. |