Dolomite from Grass Valley, Grass Valley Mining District, Nevada County, California, USA
USA | |
| Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Johnston, William Drumm (1940), The gold-quartz veins of Grass Valley, California: USGS PP 194, 101 pp.: 34-35 Van Nostrand Reinholt Press: 221. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |