- Mokelumne Hill Mining District
- Chili Gulch (Chile Gulch ?)
| Lewis, W. Scott (1933), Occurrences of opal in California: Rocks & Minerals: 8: 36-37. Kunz, George F. (1905) Gems, Jewelers' Materials, and Ornamental Stones of California. Bulletin 37 (2nd ed.) California State Mining Bureau Browne, J.R. (1869), Report of J. Ross Browne on the mineral resources of the states and territories west of the Rocky Mountains (US Treasury Dept.), 674 pp., H.H. Bancroft and Co., San Francisco [reprint of 2]: 56 |