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Siskiyou Co., California, USA

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Mineral List

Mineral list contains entries from the region specified including sub-localities

109 entries listed. 75 valid minerals.

Localities in this Region


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.


Hobson, John B. (1890), Nevada, Placer, Siskiyou Counties: California Mining Bureau (Report 10): 10: 364-398.

Dunn, Russell L. (1893), Siskiyou, Trinity Counties: California Mining Bureau. Report 11: 420-449, 480-484.

Dunn, Russell L. (1894), Auriferous conglomerate in California: California Mining Bureau. (Report 12): 12: 465.

Cooper, A.S. (1900), Register of Mines and Minerals, County of Siskiyou, California: California State Mining Bureau.

Eakle, Arthur Starr (1901), Mineralogical notes; with chemical analyses by W.T. Schaller: University of California, Department of Geological Science Bulletin: 2: 319.

Turner, Henry Ward (1903), The Cretaceous auriferous conglomerate of the Cottonwood mining district, Siskiyou County, California: Engineering & Mining Journal: 76: 653-654; […(abstract): Geol. Zentralbl., Band 9: 681 (1907)]: .

Brown, G. Chester (1913), The Counties of Shasta, Siskiyou and Trinity: California Journal of Mines and Geology: 14, part 4: 900-901.

Rogers, Austin Flint & E.S. Boundey (1914), Occurrence of free gold in granodiorite in Siskiyou County (abstract): Geological Society of America Bulletin: 25: 124.

Brown, G. Chester (1916b), Shasta, Siskiyou, Trinity Counties: California Mining Bureau. Report 14: 745-925.

Bradley, W.W., et al (1918), Manganese and chromium in California: California Mining Bureau. Bulletin 76: 82.

Laizure, Clyde McK. (1920), Siskiyou County, California; California Journal of Mines and Geology (Report 17): 17: 533-534.

Rogers, Austin Flint (1931), Chromite in the dunite of northwestern Siskiyou County, California…(abstract): Pan-Am Geologist: 55: 368-369; …Geological Society of America Bulletin: 43: 232 (1932).

Maxson, John Haviland (1933), Economic geology of portions of Del Norte and Siskiyou Counties, northwesternmost California: California Division Mines Report 29: 123-160.

Averill, Charles V. (1935), Mines and mineral resources of Siskiyou County: California Journal of Mines and Geology, California Division Mines (Report 31): 31(3): 255-338.

Averill, C.V. (1938), Gold dredging in Shasta, Siskiyou and Trinity counties: California Journal of Mines and Geology, California Division Mines (Report 34): 34: 96-126.

Rynearson, Garn Arthur & Clay T. Smith (1940), Chromite deposits in the Seiad quadrangle, Siskiyou County, California: USGS Bulletin 922-J: 281-306.

Bradley, W.W. (1942), Thirty-eighth report of the State Mineralogist: California Division Mines Report 38: 97.

O’Brien, J.C. (1947), Mines and mineral resources of Siskiyou County: California Journal of Mines and Geology, California Division Mines (Report 43): 43(4): 413-468.

Weibelt, F.J., and Ricker, Spangler (1949), Investigation of the Seiad Creek Chromite Deposits, Siskiyou County, California: U.S. Bureau of Mines Report of Investigations 4619, 28 pp.

Wells, F.G., Smith, C.T., Rynearson, G.H., and Livermore, J.S. (1949), Chromite deposits near Seiad and McGuffy Creeks, Siskiyou County, California: USGS Bulletin 948-B.

Wells, F.G. and Cater, F.W. (1950) Chromite deposits of Siskiyou County, California. California Division Mines Bulletin 134, part 1, chapter 2: 77-127.

Anonymous (1957), The Siskiyou Pioneer: Guidebook to Siskiyou’s gold fields: 2(10): 1-88 (Publications of the Siskiyou County Historical Society).

Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 116, 283, 299.

Klein, C.W. (1975), The Geology of the Happy Camp Area, Siskiyou County, California; PhD Dissertation, unpublished.

Wetzel, N. and Raney, R. (1980), McGuffy Creek Chromite Deposits, Siskiyou County, California, U.S. Bureau of Mines MAS Deposit Report, unpublished.

Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 462.

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