Latitude: 34°45'6"N
Longitude: 112°6'2"W
‡Ref.: Lindgren, W. (1926), Ore deposits of the Jerome and Bradshaw Mountains quadrangles, Arizona, USGS Bull. 782: 30, 90-91.
Production Possibilities of the Marginal Copper Mines in Arizona (1941), Arizona Department of Mineral Resources: 67-69.
Anderson, C.A. & S.C. Creasey (1958), Geology and ore deposits of the Jerome area, Yavapai County, Arizona, USGS PP 308: 94, 153.
Galbraith, F.W. & D.J. Brennan (1959), Minerals of Arizona: 110.
Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, AZ Dept. Mines & Min. Resources Open File Rept. 92-10: 17 (Table 1).
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 174.
U.S. Bureau of Mines - Arizona Bureau of Geology and Mining Technology file data.
U.S. Bureau of Land Management Mining District Sheet 57.
USGS Clarkdale Quadrangle map.
Arizona Department of Mineral Resources Dundee-Arizona Copper Co. file.
MRDS database Dep. ID #10027263, MRDS ID #M002667; and, Dep. ID #10283833, MAS ID #0040250677.
A former underground Cu-Ag-Au mine on 2 patented claims in the S½ sec. 23, T.16N., R.2E. (Clarkdale 7.5 minute topo map), covering the ridge east of Jerome. Owned by the Dundee-Arizona Copper Co. Produced 1918-1947.
Mineralization is a replacement deposit with a blanket ore body hosted in the Verde Gravels. Ore control was gravels at the base of the Verde Formation, overlying Martin Limestone. Ore concentration was gravels that contain copper in oxidized form remobilized or leached from massive
sulfides.
The Verde gravels commonly consist of pebbles, cobbles, and boulders of basalt and limestone, resting on the Martin limestone. The ore consists of chrysocolla-bearing gravel, locally forming ore zones from 4 to 5 feet thick. The blue-green chrysocolla coats and replaces the pebbles and cobbles and fills fractures in the underlying Martin limestone. The chrysocolla forms a mammillary coating on the pebbles, associated with some chalcedony.
A shaft was sunk 950 feet into Precambrian rocks. 2,750 feet of lateral workings were driven on the 950 level. No ore was found in the Precambrian. There is also an adit at the lowest level in the mineralized gravels.
Mineral List
2 entries listed. 1 valid mineral.
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