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Junction City Dredge Mine (Bergin placer; Laws; Eldorado), Red Hill, Junction City, Junction City District, Klamath Mts, Trinity Co., California, USA

Latitude: 40°43'56"N
Longitude: 123°5'52"W

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A former dredge placer Au-Pt mine located in sec. 35, T34N, R11W, MDM, 3.3 km (2.1 miles) SW of Red Hill and 3.7 km (2.3 miles) W of Junction City, along the Trinity River, partially on National Forest land, partially obn other (private ?). Operators were J. Castro and others (1939); and Junction City Mining Co. (1938). MRDS database statede accuracy for this location is 500 meters.

NOTE: Parts of the dredged area lie within Trinity National Forest. Dredging took place for about 8 miles along the river near Junction City and included smaller claims such as Bergin placer (formerly a separate record but merged with this record in MRDS - 01/92). Location given is in tailings E of Benjamin Flat at Junction City. Accurate within dredging area.

Mineralization is a placer Au-Pt deposit (Deposit model code 119; USGS model code 39a; BC deposit profile C01. C02; deposit model name: Placer Au-PGE; Mark3 model number 54). Ore control was stream hydraulics. Local rocks include schist of various types and ages, unit 7 (Klamath Mountains) and/or undivided pre-Cenozoic metavolcanic rocks, unit 2 (undivided).

Mineral List

Gold

Platinum

2 entries listed. 2 valid minerals.

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References

Day, D.T. & Richards, R.H. (1906), Useful Minerals in the Black Sands of the Pacific Slope: U.S. Geological Survey Mineral Resources of the United States, Calendar Year 1905: 1190-1191.

Averill, C.V. (1938), Gold dredging in Shasta, Siskiyou and Trinity counties: California Journal of Mines and Geology, California Division Mines (Report 34): 34(1): 117.

Averill, Charles V. (1941), Mineral resources of Trinity County: California Journal of Mines and Geology, California Division Mines (Report 37): 37(1): 25-26.

Clark, Wm. B. (1970a) Gold districts of California: California Division Mines & Geology Bulletin 193: 143-144.

Clark, Wm. B. (1970b) Platinum: California Division Mines and Geology Mineral Information Service: 23(6): 115-123.

Spencer, C.H., Jr. (1971), Statistical Correlation of Platinum Metals with Heavy Minerals in Stream Sediments of the Klamath Mountains, California: San Jose, California State University, M.S. thesis: 33.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10141902 & 60000941.

U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0061050134.

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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: 29th Jul 2012 14:02:10