Chalcedony from selected localities.
USA | |
| MRDS database Dep. ID #10048292, MRDS D #M800422. |
P Cristofono collection | |
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 349; Univ. AZ Bull. 41 (1916-17), Mineralogy of Useful Minerals in AZ: 27. | |
| Rolf Luetcke |
[var: Agate] MRDS database Dep. ID #10234773, MAS ID #0040110142. |
San Francisco River area, Clifton, Greenlee County, Arizona, USA