Acanthite from Tres de Mayo Mine group, Fresno Canyon, Palmetto Mining District, Patagonia Mountains, Santa Cruz County, Arizona, USA
USA | |
| (n.d.) ADMMR Mines Database, Arizona Geological Survey. Keith, Stanton B. (1975), Arizona Bureau of Mines Bull. 191, Index of Mining Properties in Santa Cruz County Arizona: 74 (Table 4) Schrader (1915): 290 |
Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, AZ, USGS Bull. 582: 290. |