Roach Hill Quartz Mine (Roach Hill Mine), Monona Flat, Iowa Hill, Iowa Hill District, Placer Co., California, USA
A former hydraulic placer Au mine located on Monona Flat about 1 mile NE of Iowa Hill.
Mineralization is hosted in serpentinite [?].
ReferencesHobson, John B. (1890), Nevada, Placer, Siskiyou Counties: California In. Bureau Report 10: 364-398.
Chandra, D. K. (1961) Geology and mineral deposits of the Colfax and Foresthill quadrangles, California. Special Report 67, California Division of Mines: 47.
Clark, Wm. B. (1970a) Gold districts of California: California Division Mines & Geology Bulletin 193.
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 28 (map 2-16).
1 entry listed. 1 valid mineral.
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