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USA | |
| Mineralogical Record (2000): 31(4): 345. |
- Placerville Mining District
| Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 72, 114. Kunz, George F. (1905) Gems, Jewelers' Materials, and Ornamental Stones of California. Bulletin 37 (2nd ed.) California State Mining Bureau Kunz, George Frederick (1901), Octahedrite (anatase) from Placerville, El Dorado County: Mineralogical Magazine: 9: 394 Kunz, George Frederick (1893), Mineralogical notes on brookite, octahedrite, and quartz: California Mining Bureau. Report 11: 207-209 Kunz, George Frederick (1892), Mineralogical notes on brookite, octahedrite, quartz, and ruby: American Journal of Science, 3rd. series: 43: 329-330 Kunz, George Frederick (1892), Octahedrite (anatase) near Placerville, El Dorado County: Mineralogical Magazine: 9: 395 |
- Ralston Divide Mining District
| Tony Charlton |
Unnamed Ti occurrence [1], Georgetown, Georgetown District, East Segment Mother Lode, El Dorado County, California, USA