A former Hg mine located in the SE¼ sec. 29, T1N, R1E, MDM, on the E side of Mount Diablo. The Mount Diablo Mine and the Ryne Mine were consolidated in 1930. Worked 1875-1877 and again briefly in 1930.
Mineralization is along the contact of a diapir (upthrust plug) of Franciscan sediments and serpentine intruded into sedimentary rocks of the Great Valley sequence. Near the mine much serpentine has been converted to silica-carbonate rock.
References:
Ransome, Alfred Leslie & J.L. Kellogg (1939), Quicksilver resources of California: California Division Mines Report 35: 377.
Ross, C.P. (1940a) Quicksilver deposits of the Mount Diablo region, Contra Costa County, California. USGS Bulletin 922-B, 54 pp.: 41, 42, 44.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 492.
Pampeyan, Earl Haig (1963), Geology and mineral deposits of Mount Diablo, Contra Costa County, California: California Division Mines & Geol., Special Report 80, 31 pp.: 24.
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 148, 156, 178, 254, 258, 261, 323, 332, 337, 349, 379, 382.
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: 585, 591.
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 64, 74, 127, 185, 263, 264, 266, 270, 273, 274, 275, 278, 303, 351, 427.
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Map Reference: 37°52'54"N , 121°54'46"W
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23 entries listed. 23 valid minerals.
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