Latitude: 38°26'24"N
Longitude: 122°25'45"W
A former Hg mine located in secs. 20, 21 & 23, T7N, R5W, MDM, 2.8 km (9,200 feet) NNW of Oakville. Owned by Carolyn Landry and J.J. Cohn. Discovered 1868. Worked 1872 - 1873, 1876, 1916 - 1920, 1929 - 1933, 1935, and 1942 - 1943.
Mineralization is hosted in serpentinite. The ore body is tabular, strikes N45W, dips 10SW and is 15.24 meters thick. Alteration is local with silica carbonate alteration of serpentine.
Local structures include local faults, shears, and rolls.
Workings include underground openings and total 1,828.8 meters in length and 60.96 meters deep.
Production data are found in: U.S. Bureau of Mines file data. Reserves are small.
References
Bradley, W.W. (1918), Quicksilver resources of California, with a section on metallurgy and ore dressing: California Mining Bureau. Bulletin 78, 389 pp.: 80-81.
Ransome, Alfred Leslie & J.L. Kellogg (1939), Quicksilver resources of California: California Division Mines Report 35: 410.
Fix, A.A. & C.M. Swinney (1949), Quicksilver deposits of the Oakville district, Napa County, California: California Journal of Mines and Geology: 45: 31-46.
Holmes, Jr., G.W. (1965), Mercury in California: in: U.S. Bureau of Mines Information Circular 8252.
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 118, 120.
USGS MRDS database (2005), loc. file ID #10040859.
Bailey, E.H., USGS, personal files.
Mineral List
5 entries listed. 4 valid minerals.
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