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USA | |
| Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 357 Waring, Clarence A. (1919), Butte, Placer, Sacramento, Yuba Counties: California Bureau of Mines Report 15: 453 Van Nostrand Reinholt Press: 110. |
- Deer Creek Mining District
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
- Cornucopia Mining District
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| In the Collection of Alex Earl, Ex. Dave Bunk and Ex. Gene Reynolds |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
- Gold Hill Mining District
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
- Grants Pass Mining District
| Oregon Metal Mines Handbook, 1952, Oregon Department of Geology and Mineral Industries: Bulletin No. 14-C, Vol. 2, Section 1 - Josephine Co., 2nd Edition, page 82. |