Quartz from selected localities.
USA | |
| rolf luetcke |
| Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 119. |
| Rob Lavinsky photo |
| [var: Chalcedony] P Cristofono collection, 2008 |
Anthony, J.W., Laughton, R.B. (1970) Kinoite, A new hydrous copper calcium silicate mineral from Arizona. American Mineralogist: 55: 709-713. |
Bulldozer Hill, Tiptop Mine group, Tiptop Mountain, Helvetia, Helvetia-Rosemont Mining District, Pima County, Arizona, USA