Little Ajo Mts.

Spencer, J.E., and Reynolds, S.J., 1989, Middle Tertiary tectonics of Arizona and adjacent areas, in Jenney, J.P., and Reynolds, S.J., eds., Geologic evolution of Arizona: Arizona Geological Society Digest 17, p. 539-574.

Sheppard, S.M.F., Nielsen, R.L., and Taylor, H.P., Jr., 1971, Hydrogen and oxygen isotope ratios in minerals from porphyry copper deposits: Economic Geology, v. 66, no. 4, p. 515-542.

Schwartz, G.M., 1959, Hydrothermal alteration: Economic Geology, v. 54, no. 2, p. 161-183.

Schwartz, G.M., 1958, Alteration of biotite under mesothermal conditions: Economic Geology, v. 53, no. 2, p. 164-177.

Schwartz, G.M., 1949, Oxidation and enrichment in the San Manuel copper deposit, Arizona: Economic Geology, v. 44, no. 4, p. 253-277.

Schwartz, G.M., 1947, Hydrothermal alteration in the 'porphyry copper' deposits: Economic Geology, v. 42, no. 4, p. 319-352.

Scarborough, R.B., and Wilt, J.C., 1979, A study of uranium favorability of Cenozoic sedimentary rocks, Basin and Range province of Arizona, Part 1, General geology and chronology of pre-late Miocene Cenozoic sedimentary rocks: U.S. Geological Survey Open-File Report 79-1429, 101 p. [also released as Arizona Bureau of Geology and Mineral Technology Open-File Report 79-01].

Scarborough, R.B., and Wilt, J.C., 1979, A study of uranium favorability of Cenozoic sedimentary rocks, Basin and Range province, Arizona - Part I - General geology and chronology of pre-late Miocene Cenozoic sedimentary rocks: Arizona Bureau of Geology and Mineral Technology Open-File Report 79-01, 101 p. [also released as U.S. Geological Survey Open-File Report 79-1429].

Rubel, A.C., 1915-16, Tungsten - Second issue: Arizona Bureau of Mines Bulletin no. 11, 17 p.

Rose, A.W., and Cook, D.R., 1966, Radioactive age dates of porphyry copper deposits in western United States [abs.], in Abstracts for 1965: Geological Society of America Special Paper 87, p. 141-142.