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Gold Blossom Mine (Gold Blossom shaft; Gold Blossom vein; Marion lode; Ohio claim; Back Action claim; Gold Blossom No. 2 claim), Ophir, Ophir District (Auburn District; Duncan Hill District), Placer Co., California, USA

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Latitude & Longitude (WGS84): 38° 54' 11'' North , 121° 8' 16'' West
Latitude & Longitude (decimal): 38.9030555556, -121.137777778
A former lode Au-Ag-Pb-Cu-Zn-As occurrence/mine located in the S½NE¼SW¼ and in the S½NW¼SE¼, sec. 12, T12N, R7E, and in the SW¼ sec. 7, T12N, R8E, MDM, 1.9 km (1.2 miles) NW of Ophir and about 3 to 4 miles W of Auburn, on the eastern margin of Doty Flat, S of Doty Ravine and NW of the Ophir School (4 miles W of Auburn; 2 miles N of Newcastle). Owned by the Mutual Security Co. (1935). MRDS database stated accuracy for this location is 100 meters.

Mineralization is a vein deposit hosted in granodiorite, diorite, amphibolite, and schist. The ore body strikes NW and dips 70SW at a thickness of 0.91 meter. The gold-bearing vein is principally in granitic rock and is about 1 mile along strike. The veins are 2 to 3 feet thick and carry 1½ to 3% sulfides. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges).

Workings include underground openings with a length of 167.64 meters and an overall depth of 146.3 meters and comprised of shafts, tunnels (adits ?) and drifts.

Production:: Logan, Clarence August (1936), Waring, Clarence A. (1917), and in Goodwin, Joseph Grant (1957).

Production statistics: Year: 1899 (period = 1896 to 1899) (estimate): 11 grams Au/metric ton.

No other production record was found.

Analytical data results: Concentrate assays: $17.55 to $255.00 (period values) Au/ton; $57.04 to $75.52 (period values) Ag/ton; Ore assayed 0.5 ounce Au & 245 ounces Ag/ton.

Mineral List

7 entries listed. 7 valid minerals.

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Lindgren, Waldemar (1892), The gold deposit at Pine Hill, California: American Journal of Science 3rd. series: 44: 92-96.

Lindgren, Waldemar (1894a), The gold-silver veins of Ophir, California: UGS 14th. Annual Report, part 2: 243-284; […(abstract): Mining and Scientific Press: 71: 216, 233 (1895); Journal of Geology: 4: 373-374 (1896); …Nature: 53: 466 (1896)]: 270-273.

Crawford, James John (1896), Gold-Placer: Thirteenth report of the State Mineralogist: California Mining Bureau. (Report 13): 13: 278.

Waring, Clarence A. (1917), Placer County: Report 15 of the State Mineralogist, California State Mining Bureau: 339-340.

Logan, Clarence August (1936), Gold mines of Placer County: California Journal of Mines and Geology, California Division Mines (Report 32): 32(1): 23-24, 29.

Goodwin, Joseph Grant (1957), Lead and zinc in California. California Journal of Mines and Geology, Division of Mines (Report 53): 53(3&4): 590.

Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 158, 339, 364.

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

Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 29 (map 2-17), 46, 49, 84.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10007681 & 10285653.

U.S. Bureau of Mines, Minerals Availability System (MAS) file #0060610062.

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