Williams, S.A., 1963, Oxidation of sulfide ores in the Mildren and Steppe mining districts, Pima County, Arizona: Economic Geology, v. 58, no. 7, p. 1119-1125.
Williams, S.A.
Economic Geology, v. 58, no. 7, p. 1119-1125.
Mineral District, Copper, Lead, Gold, Silver, Supergene Enrichment, Minerals, Mineralogy, Mineralization, Geochemistry,
