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USA | |
| Marty, J., Jensen, M.C., Roberts, A.C. (1993) Minerals of the Centennial Eureka Mine, Tintic District, Eureka, Utah. Rocks & Minerals: 68(6): 406-416. |
| In the collection of Alex Earl |
| Collection of Alex Earl |
| Thorne, Brent (n.d.) Personal communcation. |
| Thorne, Brent (n.d.) Personal communcation. |
| Ron Layton |
| Thorne, Brent (n.d.) Personal communcation. |
- West Tintic Mining District
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
- North Tintic Mining District
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. (2005) Mineral Resources Data System (MRDS), US Geological Survey. Bullock, Kenneth C. (1981) Minerals and mineral localities of Utah. Bulletin 117. Utah Geological and Mineral Survey |
| Bullock, Kenneth C. (1981) Minerals and mineral localities of Utah. Bulletin 117. Utah Geological and Mineral Survey |
| Carl L. Ege (2005) Selected Mining Districts of Utah. Utah Geological Survey Miscellaneous Publication 05-5 Rocks & Minerals 83:1 pp 52-62 |
| Thorne, Brent (n.d.) Personal communcation. |
| Thorne, Brent (n.d.) Personal communcation. |
- Alpine-Silver Lake Mining District
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
- East Tintic Mining District
| Bullock, Kenneth C. (1981) Minerals and mineral localities of Utah. Bulletin 117. Utah Geological and Mineral Survey U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 1024, |
| Collected by and in the collection of Alex Earl |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. Bullock, Kenneth C. (1981) Minerals and mineral localities of Utah. Bulletin 117. Utah Geological and Mineral Survey |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. Bullock, Kenneth C. (1981) Minerals and mineral localities of Utah. Bulletin 117. Utah Geological and Mineral Survey USGS Prof Paper 1024 |
Hidden Treasure Mine, Jacob City, Ophir Mining District, Tooele County, Utah, USA