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Shumate Mine (McNulty), Telegraph City, Foothill Copper Belt, Calaveras Co., California, USA

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A former Cu mine located in sec. 25, T1N, R11E, MDM, 3.5 km (2.2 miles) SSE of Telegraph City, S of Shirley Mountain, along Martells Creek (¼ mile S of the Star-Excelsior Mine). Operated during WWI and in 1943. MRDS database stated accuracy for this location is 100 meters.

Mineralization is a Cu vein deposit hosted in greenstone. The ore body strikes NW and dips NE. The vein is pyritized and kaolinized greenstone with chalcopyrite. Local rocks include Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains).

Workings include underground openings comprised of a shallow shaft that was dewatered in 1943.

Produced $8,000 (period values) during WWI.

Mineral List



3 entries listed. 3 valid minerals.

The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Eric, J.C. (1948), Tabulation of Copper Deposits in California in: Copper in California: California Division of Mines Bulletin 144: 223.

Taliaferro, N. L., and Solari, A. J. (1949), Geology of the Copperopolis quadrangle, California: California Division of Mines Bulletin 145: Pl. 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]: 133, Pl. D.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10028630 & 10138704.

U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0060090157.

 
Mineral and/or Locality  
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