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Rising Star Mine (Anchor lode), Bully Hill, Bully Hill, Bully Hill District (Winthrop District), East Shasta Copper - Zinc District, Klamath Mts, Shasta Co., California, USA

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A former Cu-Zn-Ag-Pb-Au mine located in secs. 21 & 28, T34N, R3W, MDM, 0.4 km (1,400 feet) S of Bully Hill (summit) (coordinates of record), on National Forest land. MRDS database stated accuracy for this location is 1,000 meters.

Mineralization is a deposit hosted in the Bully Hill Rhyolite. The ore body is lenticular in form. Ore control was 3 shear zones trending NW, called the Rising Star, Middle and East shear zones, and along several small faults. The Rising Star shear zone strikes N60W and dips 80NE, 40 Ft. This zone is thick near surface, thinning with depth. The Middle shear zone is irregular, generally striking N30W, and Dipping SW85-70, and is as thick as 30 feet.

The Rising Star ore bodies are closely related to NW-trending, steeply dipping shear zones near the crest of the Bully Hill anticline, which plunges toward the S. The geology is similar to the Bully Hill area.

The ore is separable into 3 main types. One type is represented by phalerite in concentrations containing as much as 20% Zn, with some pyrite and chalcopyrite. The chalcopyrite yields an average of 2% Cu. The second type is largely pyrite with smaller amounts of chalcopyrite and sphalerite. The third type is mostly chalcopyrite and pyrite, less sphalerite. Galena, tetrahedrite-tennantite, chalcocite and luzonite are also present in the first and third types. Pyrite is nearly ubiquitous, locally it is heavily disseminated and forms a halo around lenses of massive sulphide.

Alteration is hydrothermal with pyritization, albitization, chloritization, silicification, sulfatization and hydrous mica alteration.

Local rocks include Mesozoic volcanic rocks, unit 5 (Northern Sierra Nevada and Eastern Klamath Mountains).

Related tectonic structures include: An island arc.

Workings include underground openings with an overall depth of 196.29 meters. The mine is developed by 6 principal levels.

Cumulative production table values are from the Bully Hill and Rising Star Mines combined.

Mineral List



11 entries listed. 10 valid minerals.

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References

Aubury, Lewis E. (1908), The copper resources of California: California Mining Bureau. Bulletin 50: 106-107.

Rogers, Austin Flint (1915b), Notes on the occurrence of anhydrite in the California: Columbia University, School of Mines Quarterly: 36: 123-142 (1915): 132.

Eric, J.C. (1948), Copper in California: California Division of Mines Bulletin 144.DOM BULL 144 P337

Albers, John P. & Jacques F. Robertson (1961), Geology and ore deposits of East Shasta copper-zinc district, Shasta County, California, USGS PP 338: 88-100.

Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 76.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10077524 & 10189527.

U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0060890069.

 
Mineral and/or Locality  
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