Latitude: 33°40'3"N
Longitude: 113°35'24"W
‡Ref.: Bancroft, H. (1911), Reconnaissance of the ore deposits in northern Yuma County, Arizona, USGS Bull. 451: 105.
Wilson, E.D. (1933), Geology and mineral deposits of southern Yuma County, Arizona, Arizona Bureau of Mines Bull. 134.
Wilson, E.D., Cunningham, J.B., and Butler, G.M. (1934), Arizona Lode Gold Mines and Gold Mining (revised 1967), Arizona Bureau of Mines Bull. 137: 128-129.
Wilson, E.D., et al (1951), Arizona zinc and lead deposits, part II, Arizona Bureau of Mines Bull. 158:
Galbraith, F.W. (1947), Minerals of Arizona, Arizona Bureau of Mines Bull. 153: 18.
Dale, V.B. (1959) Tungsten Deposits of Yuma, Maricopa, Pinal, and Graham Counties, Arizona. U.S. Bureau of Mines Report of Investigation 5516: 6-7.
Galbraith, F.W. & D.J. Brennan (1959), Minerals of Arizona: 51.
Keith, Stanton B. (1978) State of Arizona Bureau of Geology and Mineral Technology, Geological Survey Branch Bull. 192, Index of Mining Properties in Yuma County, Arizona: 152 (Table 4).
Niemuth, N.J. (1987), Arizona Mineral Development 1984-1986, Arizona Department of Mines & Mineral Resources Directory 29, 46 pp.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 205, 228, 336.
U.S. Bureau of Mines - Arizona Bureau of Geology and Mining Technology production file data.
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10102530, MRDS ID #M003633; and, Dep. ID #10161694, MAS ID #0040120107.
A small former underground Au-Ag-Pb-Cu mine located on 6 claims in the NE¼ sec. 22 and the NW¼ sec. 27, T4N, R13W, on the NW base of Martin Peak, about 9 road miles from Salome, in the SW Harquahala Mountains, at about 1,800 feet of altitude, on BLM-administered land. Started in 1888; reopened 1906. Sold to Hubbard & Bowers after discovery. They formed the Bonanza Mining Co. Owned afterward by the Harquahala Gold Mining Co., Ltd. (1893 - to end of 1897); Mr. A.G. Hubbard (1899); the Harqua Hala Mining Co. (1906-1908); the Yuma Warrior Mining Co. (1913-1916); and by the Bonanza and Golden Eagle Mining Co. Operated by Peter Kiewit Inc. (1986). Previous operators include the Harquahala Operating Co.; Mr. David Obenstine; Mr. C. Pickenbach; Mr. Jack Givens; Mr. M.M. Carpenter; Mr. H.E. Hickson; Mr. J.B. Martin; International Mining; C.C. Canfield; H.C. Reedall; Hubbard and Bowers; G.R. Miller (1941); Ray MacDonald (1937); Golden Eagle; John Jones, R.H. White (1924); and, John Martin (1914).
Mineralization is a vein deposit that occurs within a zone of faulting that strikes N-S, dips 45E, and extends through the limestone, shale & quartzite into the basal granite. Rich, pockety shoots of gold with minor silver in a gangue of iron oxides, shattered quartz, calcite, and gypsum in an oxidized zone, in shear zones; at depth, gold values mainly in auriferous pyrite with some copper and lead sulfide mineralization, in fracture veins. The veins are often flat-dipping with larger and richer deposits in the shattered quartzite. The two main ore shoots represent a continuous shear zone on the east, striking approximately N-S and dips about 45ºW. and is joined by a lesser fault from the west, with a parallel strike and a dip of 45ºE. Oreshoots mined in the "Castle Garden" stope occurred within these 2 shear zones and ranged from a few inches to many feet. The ore shoot on the west was more productive. Gangue consists of red hematite, with quartz, calcite, brecciated country rock and a little gypsum. The granite, which appears on the 6th. & 7th. levels, shows intense sericitization. Ore control is mineralization associated with microdiorite dikes in the area.
Overthrust faulting in the district placed Precambrian metamorphic rocks over Paleozoic-Mesozoic sediments.
Workings include an inclined shaft and many hundreds of feet of drifts on 7 levels, to a depth of 182.88 meters. Workings involve the Bonanza shaft: 600 feet deep with levels at 110, 200 and 500 feet; other workings include the Mollina shaft (110 feet); the Roy shaft (65 feet deep with a 70 foot crosscut); the Roy shaft No. 2 (50 feet deep); the New Deal Claim shaft (100 feet deep); the Summit shaft (100 feet deep); the Roy tunnel (300 feet long); the Summit Lower tunnel (175 feet long); and, the Summit Upper tunnel (125 feet long). During the 1984-1986 period, Peter Kiewit Inc. performed a geologic evaluation and surface drilling project here.
Discovered in 1888 and worked intermittently on a large scale to 1918. Subsequently on a small scale, largely by reworking dumps and tailings, to 1964. Total production data includes production for the Golden Eagle Mine group.
Production was $1,600,000 in Au bullion in 3 years (1891-1894)(period values)(includes the Golden Eagle Mine). 158,761 tons of ore averaging about 0.85 oz Au/ton, 0.53 oz Ag/ton, and minor Pb and Cu.
Mineral List
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