Quartz from selected localities.
USA | |
| P Cristofono collection, 2007 |
[Chalcedony var: Agate] MRDS database Dep. ID #10023617, MRDS ID #I000805. | |
| Robert E.Walstrom Collection |
| Robert E. Walstrom Collection |
| Robert E.Walstrom Collection |
| USGS Prof Paper 68 The Ore Deposits of New Mexico , Calcite, Pyrite, Quartz, Argentite, Bornite, Cerargyrite, Chalcocite, Chalcopyrite, Galena, Sphalerite, Rhyolite, |
Robert E. Walstrom Collection | |
Robert E. Walstrom Collection |
Peloncillo Mountains, Graham County, Arizona, USA