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Lake Co., California, USA

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Location is approximate, estimate based on other nearby localities.
Latitude & Longitude (WGS84): 38° North , 122° West (est.)
Margin of Error:~10km

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Mineral List

Mineral list contains entries from the region specified including sub-localities

79 valid minerals. 2 (TL) - type locality of valid minerals.

Rock Types Recorded

Entries shown in red are rocks recorded for this region.

Note: this is a very new system on and data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Localities in this Region


This page contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


Keyes, Winfield Scott (1876), Borax Lake and Sulphur and quicksilver deposits near Clear Lake, California Engineering & Mining Journal: 22: 118.

Palmer, Lyman, L. (1881), History of Napa and Lake Counties, 291 pp., San Francisco, Slocum, Bowen and Co.

Becker, George F. (1888b), Geology of the quicksilver deposits of the Pacific slope: USGS Monograph 13, atlas: 367.

Goodyear, Watson Andrews (1890), Alameda, Colusa, Contra Costa, Lake, Marin, Mendocino, Napa, Yolo Counties: California Mining Bureau. Report 10: 91-95, 153-164, 165, 227-271, 299, 314, 322, 349-363, 793-794.

Fairbanks, Harold W. (1893a), Notes on the geology and mineralogy of portions of Tehama, Colusa, Lake, and Napa Counties: California Mining Bureau. Report 11: 54-75.

Watts, Wm. L. (1893), Alameda, Colusa, Del Norte, Fresno, Glenn, Humboldt, Marin, Mendocino, Merced, Placer, Sacramento, Santa Clara, San Joaquin, Sonoma, Stanislaus, Sutter, Kern, Lake, Contra Costa, Tehama, Tulare Counties California Mining Bureau. Report 11: 121-138, 179-199, 210-240, 249-258, 319-322, 334-336, 374-375, 394, 453-479, 485-492.

California State Mining Bureau (California Division of Mines and Geology): Register of mines and minerals with map (each county issued separately): Lake (1901).

Bradley, W.W. (1916a), Colusa, Glenn, Lake, Marin, Napa, Solano, Sonoma, Yolo County: California Mining Bureau. Report 14: 175-370.

Averill, Charles V. (1929), Redding field division, Lake County: California Journal of Mines and Geology, California Division Mines (Report 25): 25: 337-365.

Anderson, Charles A. (1936), Volcanic history of the Clear Lake area, California: Geological Society of America Bulletin: 47: 637.

Averitt, Paul (1945), Quicksilver deposits of the Knoxville district, Napa, Yolo, and Lake Counties, California: California Journal of Mines & Geology, California Division Mines (Report 41): 41(2): 65-90.

Yates, Robert G. & Lowell S. Hilpert (1946), Quicksilver deposits of eastern Mayacmas district, Lake and Napa Counties, California: California Journal of Mines and Geology, California Division of Mines (Report 42): 42: 231-286.

Averill, Charles V. (1947a), Mines and mineral resources of Lake County: California Journal of Mines and Geology, California Division Mines (Report 43): 43(1): 15-40.

Nichols, J.B. (1948) Minerals of Lake County, California. Mineralogist: 16: 171-177., 190-195.

Brice, J.C. (1953), Geology of Lower Lake quadrangle, California: California Division Mines Bulletin 166.

Simoons, F.J. (1954), Nineteenth century mines and mineral spring resorts of Lake County, California: California Journal of Mines and Geology: 50: 295-319.

Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geol. Bulletin 189: 282, 373.

McNitt, J.R (1968) Geology of the Kelseyville quadrangle, Sonoma, Lake and Mendocino counties, California. California Division of Mines and Geology Map Sheet 9.

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