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Haley group (Minnie Haley group; Endless Chain A; Kane and Wilber group; Potter; Endless Chain and Missing Link), North Gray Rocks, East Shasta Copper - Zinc District, Klamath Mts, Shasta Co., California, USA

Latitude: 40°47'5"N
Longitude: 122°16'16"W

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A Cu-Au-Ag occurrence located in sec. 24, T34N, R4W, MDM, 1.6 km (5,400 feet) S of North Gray Rocks, about 1 mile NE of the confluence of the Pit River and the McCloud River, on National Forest land. MRDS database stated accuracy for this location is 1,000 meters.

Mineralization is hosted in andesite. The ore body is 0.3 meters wide and 0.61 meters long. Local rocks include Paleozoic metavolcanic rocks, unit 1 (Eastern Klamath Mountains).

Local structures include an epidote dike 8 to 15 feet wide which strikes N80E and dips vertically.

Workings include underground openings. Underground operations include 4 tunnels from 4 to 150 feet in length; a 160 foot tunnel along the dike in claim No. 2. The fracture in claim No. 2 was drifted for 30 feet at 1800 feet. A crosscut tunnel at 200 feet cut ore fissure bearing N50E.

Mineral List

Bornite
Chalcocite

Chalcopyrite
Epidote

Pyrite
Pyrrhotite

6 entries listed. 6 valid minerals.

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References

Tucker, W.Burling (1923), Trinity County: 19th Report of the State Mineralogist; California Mining Bureau: 92.

Tucker, W. Burling (1924b), Copper resources of Shasta County: California Mining Bureau. Report 20: 419-447.

Root, L.L. (1926) Twenty-second report of the State Mineralogist. California Mining Bureau Report 22, 610 pp.: 146, 149.

Tucker, W. Burling (1926), Copper: California Mining Bureau. Report 22: 154.

Lydon, Philip Andrew and O’Brien, J.C. (1974) Mines and mineral resources of Shasta County, California. California Division of Mines and Geology County Report 6, 154 pp.

Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 70.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10033838 & 10116328.

U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0060890104.

USGS crib No. MO20473.

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Copyright © Jolyon Ralph and Ida Chau 1993-2012. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the 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 hundreds 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.
Current server date and time: 14th Jun 2012 22:06:25