Quartz from Gillis prospect (Gillis Iron Nos. 1 & 2 claims), Fitting Mining District, Mineral County, Nevada, USA
USA | |
| [var. Chalcedony] (2005) Mineral Resources Data System (MRDS), US Geological Survey. Ross, Donald C. (1961) Geology and mineral deposits of Mineral County, Nevada. Bulletin 58. Nevada Bureau of Mines |