- Fiddletown Mining District (Oleta Mining District)
| Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Murdoch, Joseph, Webb, Robert W. (1966) Minerals of California, Centennial Volume (1866-1966) - California Division Mines and Geology, Bulletin 189. p.1-559. Symons, Henry Heilbronner (1940), Quartz gem stones of California: Rocks & Minerals: 15: 41 Van Nostrand Reinholt Press: 344. |