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Magna Mine (Magma Chief Mine; Lucky Boy; Jewell; Sombrero Butte property; Gulch Copper lode; Audacious claim; Kin Sabe claim; Hot Foot property; Comet claim; Christman tunnel), Sombrero Butte area, Bunker Hill District, Galiuro Mts, Pinal Co., Arizona, US

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A former underground Cu-Pb-Mo mine located in sec. 23, T8S, R18E, on the SE side of Scanlon Wash, about 1 mile N of Sombrero Butte, on BLM administered land. Produced 1915 - 1958. Originally developed by Jewell & Corbett in 1915, taken over by Magma Chief Copper in 1920.

Also known as or designated as: Gulch Copper lode MS 3272 patented claim; unpatented claim MS 3351; unpatented claim MS 3409; unpatented claim MS 3552; unpatented claim MS 3601; unpatented claims MS 3602.

Mineralization is a breccia pipe in a fracture zone or intersection of zones, near granodiorite. Host rock is the Glory Hole volcanics and an associated rock unit is the Copper Creek Granodiorite. Area structures include small faults at N10°W orientation, near breccia; short E-W-trending faults and medium length ENE faults with a steep dip.

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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.


Kuhn, T.H. (1941) Pipe deposits of the Copper Creek area. Economic Geology: 36(5): 512.

Wilson, E.D., et al (1951), Arizona zinc and lead deposits, part II, Arizona Bureau of Mines Bull. 158: 56-65.

US Atomic Energy Commission Preliminary Reconnaissance Report 172-488 (1953): 35.

U.S. Bureau of Mines file data.

U.S. Bureau of Land Management Mining District sheets 741, 743.

USGS Rhodes Peak quadrangle map.

Arizona Department of Mineral Resources Magma Chief, Sombrero Butte Mining Property and Bunker Hill Mine files.

Arizona Department of Mineral Resources V file.

MRDS database Dep. ID #10048310, MRDS ID #M899875; and Dep. ID #10113160, MRDS ID #M899875; and Dep. ID #10113671, MAS ID #0040210780.

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