Quartz from Alum Gulch, Harshaw Mining District, Patagonia Mountains, Santa Cruz County, Arizona, USA
USA | |
| Luetcke, Rolf (n.d.) Personal communication. |
| Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, AZ, USGS Bull. 582: 254. |
Flux Mine, Flux Gulch, Alum Gulch, Harshaw Mining District, Patagonia Mountains, Santa Cruz County, Arizona, USA