Chert from Graham County, Arizona, USA
USA | |
| AZ Bur. Mines Bull. 135 (1933), AZ Gold Placers and Placering: 81-82. |
| MRDS database Dep. ID #10060233. |
USA | |
| AZ Bur. Mines Bull. 135 (1933), AZ Gold Placers and Placering: 81-82. |
| MRDS database Dep. ID #10060233. |