Latitude: 34°44'39"N
Longitude: 112°7'0"W
‡Ref.: Weed, W.H. (1918) The Copper Handbook, Vol. XIII: 399.
Lindgren, W. (1926), Ore deposits of the Jerome and Bradshaw Mountains quadrangles, Arizona, USGS Bull. 782: 95.
Anderson, C.A. & S.C. Creasey (1958), Geology and ore deposits of the Jerome area, Yavapai County, Arizona, USGS PP 308: 154.
U.S. Bureau of Mines - Arizona Bureau of Geology and Mineral Technology file data.
USGS Cottonwood Quadrangle map.
U.S. Bureau of Land Management Mining District Sheet 57.
MRDS database Dep. ID #10088890, MRDS ID #M800329; and, Dep. ID #10235069, MAS ID #0040250505.
A former underground Cu-Ag-Au mine on 11 claims, including the Silent claim, located south of the United verde Mine and ½ mile South of Jerome. Owned by the Cleopatra Copper Co.; and, the Phelps Dodge Corp. Produced 1958-1959. Claims extend into sec. 22 and 26.
Mineralization is greenstone and quartz porphyry (Cleopatra Quartz Porphyry Member of the Deception Rhyolite) containing several more or less irregular veins of copper ore. North of the Hull fault in quartz porphyry, some copper sulfide is present in irregular quartz stringers and small blebs of massive sulfide. Ore control was stratigraphy and igneous activity. Ore concentration was oxidation at near surface. Alteration includes chloritization and sericitization.
Area structures include massive sulphide lenses elongate parallel to bedding in metavolcanic rocks. Foliation in metavolcanic rocks trends N10W to N40W.
Workings include the Dillon tunnel (adit) at about 3,200 feet (about 986 meters) long, which connects to the north with the United verde 500 level.
Mineral List
4 entries listed. 2 valid minerals.
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