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Oat Hill Mines, Aetna Springs, East Mayacmas District, Mayacmas Mts (Mayacamas Mts), Napa Co., California, USA

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A former Hg mine complex located in secs. 27, 28, 33 & 34, T10N, R5W, MDM, 4.6 km (2.9 miles) WNW of Aetna Springs.

Mineralization is Hg deposits associated with fault structures and the borders of serpentine masses. Pyrite is always a common accessory mineral.

Workings featured 20 miles of underground tunneling.

Mineral List



8 entries listed. 7 valid minerals.

The above list contains all mineral locality references listed on mindat.org. 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 mindat.org 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.

References

Becker, George F. (1888b), Becker, George F. (1888b), Geology of the quicksilver deposits of the Pacific slope: USGS Monograph 13, atlas: 354-358.

Fairbanks, Harold W. (1893a), Notes on the geology and mineralogy of portions of Tehama, Colusa, Lake, and Napa Counties: California Mining Bureau. Report 11: 66.

Ross, C.P. (1940b) Quicksilver deposits of the Mayacmas and Sulphur Bank districts, California. USGS Bulletin 922-L: 329-353.

Yates, Robert G. & Lowell S. Hilpert (1946), Quicksilver deposits of eastern Mayacmas district, Lake and Napa Counties, California: California Division of Mines Report 42: 254-268.

Rocks & Minerals (1947): 22: 613.

Davis, Fenelon Francis (1948), Mines and mineral resources of Napa County, California: California Division Mines Report 44: 176-183.

Johnson, Fremont T. & Spangler Ricker (1949), Investigation of Oat Hill mercury mine, Napa County, California: US Bureau Mines Report of Investigation 4542: 491-498.

Dickson, F.W. & G. Tunell (1959), Stability relations of cinnabar and metacinnabar: American Mineralogist: 44: 482-483.

Davis, F.F. and E.H. Bailey (1966) Mercury. California Division Mines and Geol. Bulletin 191: 247-254.

Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 178, 262, 265.

White, D.E. (1967) Mercury and base-metal deposits with associated thermal and mineral waters. In: H.L. Barnes (Editor), Geochemistry of hydrothermal ore deposits. Holt Reinhart and Winston, New York: 594.

Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 111 (map 3-7), 118, 266.

Mineral and/or Locality  
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