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Plymouth Mine, Calistoga Hot Springs, Calistoga District (Silverado District), Mayacmas Mts (Mayacamas Mts), Napa Co., California, USA
Latitude: 38°41'49"N
Longitude: 122°35'27"W
Longitude: 122°35'27"W
Mineralization is hosted in serpentinite.
Local structures include local fractures.
About 85 tons of ore assaying 43 to 50% Cr203 was shipped.
References
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): 33.
Holmes, Jr., G.W. (1965), Mercury in California: in: U.S. Bureau of Mines Information Circular 8252.
Mineral List
| Cinnabar | Opal |
2 entries listed. 2 valid minerals.
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