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Banner Mine, Monte de Oro, Oroville (Ophir City), Butte Co., California, USA

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A former lode Au mine located in secs. 28, in the NE¼ sec. 33 & in the NW & SW¼'s sec. 34, T20N, R4E, MDM, 0.7 km (2,200 feet) ESE of Monte de Oro (coordinates of record) and 5.2 km (3.2 miles) NE of Oroville. Operated by Banner Consolidated Mines, San Francisco, California (timeframe = ?) Operated by Roy D. and Jennie Livesly, Oroville, California (timeframe = ?). MRDS database stated accuracy for this location is 500 meters.

Mineralization is a Au deposit hosted in slate and quartzite. Local rocks include Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains).

Production data are found in: Logan (1930).

production information: $600,000 of Au produced up to 1891 (period values)(26th. Report: 370). $81,000 of Au produced 1908-1930 (period values). Worked in 1929.

Mineral List

2 entries listed. 2 valid minerals.

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.


Crawford, James John (1896), Thirteenth report of the State Mineralogist: California Mining Bureau. (Report 13): 13: 82.

Waring, Clarence A. (1915), Mines and Mineral Resources of Butte County: California Journal of Mines and Geology (Report 15): 15: 211-212.

Logan, Clarence August (1930), Mines and Mineral Resources of Butte County, California: California Journal of Mines and Geology, California Mining Bureau (Report 26): 26(4): 369-370.

Eric, J.C. (1948), Copper in California: California Division of Mines Bulletin 144: 217.

O’Brien, J.C. (1949), Mines and mineral resources of Butte County, California: California Journal of Mines and Geology (Report 45): 45(3): 440.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10109115, 10109116 & 10138064.

U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0060070088.

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