Quartz from selected localities.
USA | |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
| Weed, W.H. (1912) Geology and Ore Deposits of the Butte District, Montana. United States Geological Survey, Professional Paper 74, 262 pages plus plates. |
[www.johnbetts-fineminerals.com]; U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
Weed, W.H. (1912) Geology and Ore Deposits of the Butte District, Montana. United States Geological Survey, Professional Paper 74, 262 pages plus plates.; U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
Weed, W.H. (1912) Geology and Ore Deposits of the Butte District, Montana. United States Geological Survey, Professional Paper 74, 262 pages plus plates.; USGS Bull 574 | |
Weed, W.H. (1912) Geology and Ore Deposits of the Butte District, Montana. United States Geological Survey, Professional Paper 74, 262 pages plus plates. | |
Sales, R. (1914) Ore deposits at Butte, Montana. American Institute of Mining and Metallurgical Engineers Transactions, Vol. 46, p. 4-106. | |
Weed, W.H. (1912) Geology and Ore Deposits of the Butte District, Montana. United States Geological Survey, Professional Paper 74, 262 pages plus plates.; U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
Weed, W.H. (1912) Geology and Ore Deposits of the Butte District, Montana. United States Geological Survey, Professional Paper 74, 262 pages plus plates.; U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
Weed, W.H. (1912) Geology and Ore Deposits of the Butte District, Montana. United States Geological Survey, Professional Paper 74, 262 pages plus plates. | |
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
Weed, W.H. (1912) Geology and Ore Deposits of the Butte District, Montana. United States Geological Survey, Professional Paper 74, 262 pages plus plates. |
Emma Mine, Butte Mining District, Silver Bow County, Montana, USA