Latitude: 37°36'24"N
Longitude: 121°29'45"W
A Mn-Fe mine located in secs. 2 & 11, T4S, R4E (MD).
Mineralization is hosted in the Calaveras Group (chert).
References
Trask, John Boardman (1855), (Extracts from) Geology of California, appendix in F.S. Marryat, Mountains and molehills: 383-393, New York and London, 1855: 86.
Watts, Wm. L. (1890), Merced, Sacramento, San Joaquin, San Mateo, Santa Clara, Santa Cruz, Solano, Stanislaus, Yolo Counties: California Mining Bureau. Report 10: 564.
Bradley, W.W., et al (1918), Manganese and chromium in California: California Mining Bureau. Bulletin 76: 65.
Laizure, Clyde McK. (1925), 21st Report of the State Mineralogist, California State Mining Bureau: 191.
Bradley, W.W. (1943), Thirty-ninth report of the State Mineralogist: California Division Mines Report 39: 98.
Division of Mines Bull. 125 (1943): 166.
Egenhoff, E.L. (1948), Bibibliography of the Iron-ore Resources of California.
Division of Mines Bull. 129, Iron Resources of California:
Volin, M.E. & E.J. Matson (1949), Investigation of the Ladd manganese deposits San Joaquin County, California: US Bureau Mines Report of Investigation 4580.
Trask, Parker Davies (1950) Geologic description of the manganese deposits of California. California Division of Mines Bulletin 152, 378 pp.: 217, 221-224.
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geol. Bulletin 189: 101, 215, 228, 298, 320.
Pemberton, H. Earl (1983), Minerals of California: 167, 214, 413.
Mineral List
7 entries listed. 5 valid minerals.
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