Quartz from Skyline group, Lone Pine Mining District, Humboldt County, Nevada, USA
USA | |
| [Chalcedony var. Agate] (2005) Mineral Resources Data System (MRDS), US Geological Survey. USGS Bull 1538D |
USA | |
| [Chalcedony var. Agate] (2005) Mineral Resources Data System (MRDS), US Geological Survey. USGS Bull 1538D |