Caledonite from
USA | |
| Luetcke, Rolf (n.d.) Personal communication. |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 153 Williams, S.A, (1963), Oxidation of sulfide ores in the Mildren and Steppe mining districts, Pima Co., AZ, Econ.Geol.: 58: 1119-1125. |
| Luetcke, Rolf (n.d.) Personal communication. |
Golden Cross Mine, Cababi Mining District, Comobabi Mountains, Pima County, Arizona, USA