Latitude: 33°25'29"N
Longitude: 110°46'18"W
A former surface and underground Cu-Ag-U-silica mine located in sec. 15, T1N, R15E, about 1 mile S of Copper Hill and about 1.4 miles N of Central Heights (?). Claims extend into sec. 14. Other claims lie in the NE¼ sec. 15. Owned by Kesson and Kesson(1991). Additional names which apply to this property: Black Hawk patented claim MS 524; Arizona Commercial property; Eureka patented claim MS 2593.
The Arizona Commercial Copper Co. was incorporated in January, 1905 to develop 2 small groups of claims on the northwestward extension of the Old Dominion vein - the Copper Hill group and the Eureka group, forming the consolidated Arizona Commercial Mine.
A group of claims comprised of the Copper Hill claim and 3 fractional claims, covering the outcrop of the Old Dominion vein from the United Globe property to the Budget fault. Originally owned by the Arizona Commercial Co.
This mine develops a segment of the Old Dominion vein west of the Budget fault and also a short segment of the Iron Cap vein that is generally considered to be the continuation of the Old Dominion vein east of the Budget fault.
Mineralization is hosted in the Troy Quartzite.
No ore was found west of the Budget fault down to the 1200 level, on which a body of primary sulfide ore was cut by a drift east of the shaft. This body of ore continued down to the 1900 level. It is the eastward continuation of the body of primary ore that was mined between the 14th. & 18th. levels of the Grey shaft, in the Old Dominion Mine. It coincides with a part of the vein in which both walls are of sedimentary rocks. From the 1800 level down to the 2100 level, the footwall of the vein is Pinal schist and the hanging wall is diabase. No records of stoping below the 1800 lvel have been found.
East of the Budget fault, diabase was penetrated in No. 2 shaft to the 500 level, below which the shaft passed through a complete section of Mescal limestone and Dripping Spring quartzite and bottomed in barnes conglomerate a little below the 1300 level.
A body of secondary chalcocite ore was found, in the iron Cap vein, about 350 feet east of No. 2 shaft on the 600 level. It had a vertical height of about 300 feet and plunged about 15º toward the SW. West of the shaft it ended against the Budget fault, the bottom near the fault being a little below the 1200 level. A few scattered stopes between the bottom of the chalcocite body down to the 1500 level probably are in primary ore. The chalcocite body continues northeastward into the Iron Cap property.
The Copper Hill shaft was begun circa 1905 at the west boundary of the Copper Hill group. It achieved a depth of 2,100 feet. Considerable development work was done on the Old Dominion vein, but no ore was found. A second shaft, the No. 2, is collared a few feet east of the trace of the Budget fault.
References
Ransome, F.L. (1903) Geology of the Globe Copper District, Arizona, USGS PP 12: 154.
Arizona Mining Journal (1919), November 1919: 41.
U.S. Atomic Energy Commission Report 172-480 (1953), Gila County Preliminary Reconnaissance Report: 50.
Galbraith, F.W. & D.J. Brennan (1959), Minerals of Arizona: 70.
Peterson, N.P. (1962), Geology and ore deposits of the Globe-Miami District, Arizona, USGS PP 342: 104-106.
Elevatorski, E.A. (1978), Arizona Industrial Minerals, Arizona Department of Mineral Resources, Minerals Report No. 2: 31.
Arizona Department of Mines & Mineral Resources (1989), Directory of Active Mines in Arizona, incorporating sand and gravel operations 1989-1990, Arizona Department of Mines & Mineral Resources Directory 36, 14 pp.
Peirce, H. Wesley (1990), Arizona Geological Survey Industrial Minerals card file.
Phillips, K.A., Beard, R.R., Niemuth, N.J., and Bain, D.R. (1991) Active Mines in Arizona – 1992: Arizona Department of Mines and Mineral Resources Directory 39, 20 pp.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 182.
Arizona Department of Mineral Resources Copper Hill Mine active file.
U.S. Bureau of Land Management Mining District Sheet 171.
MRDS database Dep. ID #10062117, MRDS ID #TC35374; and Dep. ID #10282824, MAS ID #0040070261.
Mineral List
2 entries listed. 2 valid minerals.
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