Quartz from Section 21 prospects, Pyramid Mining District, Washoe County, Nevada, USA
USA | |
| [var. Chalcedony] NBMG Bull 70 Geology and Mineral Resources of Washoe and Storey Counties, Nevada |
USA | |
| [var. Chalcedony] NBMG Bull 70 Geology and Mineral Resources of Washoe and Storey Counties, Nevada |