Chalcedony from selected localities.
USA | |
| Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 85; MacFall, P.M. (1951) Gem Hunter's Guide (1st ed.). Science and Mathematics Publishing Company, 187 pages. |
Rob Lavinsky specimen |
USA | |
| Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 85; MacFall, P.M. (1951) Gem Hunter's Guide (1st ed.). Science and Mathematics Publishing Company, 187 pages. |
Rob Lavinsky specimen |
Live Oak pit, Inspiration Mine, Miami-Inspiration deposit, Inspiration, Miami-Inspiration Mining District, Globe-Miami Mining District, Gila County, Arizona, USA