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Richie Hill Mine, Calaveritas, Calaveritas District, East Belt, Calaveras Co., California, USA
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Latitude: 38°10'3"N
Longitude: 120°37'28"W
 
 
A former hydraulic placer Au occurrence/mine located in sec. 26, T4N, R12E, MDM. Property consisted of 40 acres. MRDS database stated accuracy for this location is 500 meters.

Mineralization is a placer Au deposit on the Fort Mountain channel. The gravel bank is 20 feet high, 200 feet long and exposes 1 to 18 inch slabs of quartz, schist, quartzite, and greenstone. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges).

Workings included hydraulic operations wherein the gravel was washed from the bank, along sloping floor of the cut and to sluices.

Mineral List

Gold


1 entry listed. 1 valid mineral.

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References

Logan, Clarence August and Franke, H. (1936), Mines and Mineral Resources of Calaveras Co.: California Division of Mines, California Journal of Mines & Geology, California Division of Mines (Report 32): 32(3): 362.

Clark, L.D. (1954), Geology and mineral deposits of the Calaveritas quadrangle, Calaveras County, California: California Division Mines Special Report 40: 21, Pls. 1 & 2.

Clark, Wm. B. & P.A. Lydon (1962), Mines and mineral resources of Calaveras County, California: California Division of Mines & Geology County Report 2; [… Geological Society of America Proceedings, 1933: 312-313, 1934]: 205, Pl. C.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10028882 & 10260362.

U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0060090478.

USGS MAP GQ-222

External Links


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Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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