Hornfels from Arizona, USA
USA | |
| Stewart, J.C. (1971) Geology of the Morningstar Mine area, Greaterville Mining district, Pima County, Arizona: Tucson, University of Arizona, M.S. thesis, 79 p. |
| Manske, S. L., & Paul, A. H. (2002). Geology of a major new porphyry copper center in the Superior (Pioneer) district, Arizona. Economic Geology, 97(2), 197-220. |