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Coggins Mine, Castella, Klamath Mts, Shasta Co., California, USA

Latitude: 41°9'10"N
Longitude: 122°19'30"W

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A former Cr mine located in sec. 2, T38N, and in sec. 35, T39N, R4W, MDM, 1.7 km (5,600 feet) NNW of Castella. MRDS database stated accuracy for this location is 1,000 meters. NOTE: MRDS file places this location in sec. 16, T38N, R4E, MDM, which is apparently in error based on the R value of 4E - should be 4 W. NOTE: The MRDS database also includes file #10116745, which places Unidentified Cr occurrernce (1) in sec. 16, T38N, R4W, MDM, but provides different coordinates. Synonymy unknown.

Local rocks include ultramafic rocks, chiefly Mesozoic, unit 1 (Trinity Ophiolite).

Workings include underground openings.

Mineral List

Magnesiochromite

1 entry listed. 1 valid mineral.

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References

Stevens, Rollin Elbert (1944) Composition of some chromites of the western hemisphere. American Mineralogist: 29: 7.

Wells, F.G. and Hawkes, H.E. (1965) Chromite deposits of Shasta, Tehama, Trinity and Humboldt counties, California. California Division Mines and Geology Bulletin 134, part 1, chapter 3: 146-158, Pl. 19.

Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 158.

California Regional Water Quality Control Board, Central Valley Region, Inactive Mines Drainage in the Sacramento Valley California, Staff Report, July (1992): 69.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10286576.

U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0060890664.

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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 05:35:51