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Sugar Loaf Mine, Sugarloaf (4), East Shasta Copper - Zinc District, Klamath Mts, Shasta Co., California, USA

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A Cu occurrence/mine located in sec. 4, T33N, R2W, MDM, 0.3 km (1,100 feet) ESE of Sugarloaf (coordinates of record), on National Forest land. MRDS database accuracy for this location is not stated.

Mineralization is a replacement vein deposit, hosted in rhyolite. Ore controls included a contact zone. This prospect is on a contact between the Bully Hill Rhyolite and the Pit Formation. Local rocks include Triassic marine rocks, unit 2 (Eastern Klamath Mountains).

Workings include underground openings with a length of 327.66 meters and an overall depth of 48.77 meters. Operations include adits. The upper adit is 250 feet in length and the lower adit is 800 feet in length. Two feet of ore was located in the last 25 to 30 feet of the lower adit.

Mineral List

8 entries listed. 8 valid minerals.

The above list contains all mineral locality references listed on 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 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.


Albers, John P. & Jacques F. Robertson (1961), Geology and ore deposits of East Shasta copper-zinc district, Shasta County, California, USGS Professional Paper 338: 102.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10033888.

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