Quartz from selected localities.
USA | |
| Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 127 (Table 4); Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 138; Arizona Bureau of Mines file data. |
| rolf luetcke |
| Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 119. |
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| Rob Lavinsky photo |
| Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 128 (Table 4); Schrader (1915): 126-127; Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 127; Arizona Bureau of Mines file data. | |
| Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 134 |
| [var: Chalcedony] P Cristofono collection, 2008 |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 335. |
Bulldozer Hill, Tiptop Mine group, Tiptop Mountain, Helvetia, Helvetia-Rosemont Mining District, Pima County, Arizona, USA