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USA | |
- Butterbredt Peak (Butterbread Peak)
| Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 335. Brown, G.C. (1916a), Kern County: California Mining Bureau. Report 14: 476 |
| Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 217 Bowen, O.E., Jr. (1954), Geology and mineral deposits of Barstow quadrangle, San Bernardino County, California: California Division Mines Bulletin 165: 148 |
- Belleville Mining District
| Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Sinkankas, John (1976) Gemstones of North America Vol. 2. Van Nostrand Reinhold Company, New York. Van Nostrand Reinholt Press: 423. |