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Katherine Mine (Catherine Mine; Illinois Mine; Mohawk Extension Patented Mine), Union Pass District (Katherine District), Oatman District (San Francisco District; Union Pass District), Black Mts, Mohave Co., Arizona, USA

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Latitude & Longitude (WGS84): 35° 14' 0'' North , 114° 32' 52'' West
Latitude & Longitude (decimal): 35.23333,-114.54778
Köppen climate type:BWh : Hot deserts climate


‡Ref.: Lausen, C. (1931), Geology and ore deposits of the Oatman and Katherine Districts, AZ Bur. Mines Bull. 131: 21; Wilson, E.D., et al (1934), AZ Bur. of Mines Bull. 137: 103-104; Schrader, F.C. (1909), Mineral deposits of the Cerbat Range, Black Mountains, and the Grand Wash Cliffs, Mohave County, Arizona: USGS Bull. 397; Arizona Mining Jour. (Dec 15, 1921): 18; Arizona Mining Jour. (Jul 15, 1924): 26; Galbraith, F.W. & Brennan (1959), Minerals of AZ: 88; Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, AZ Dept. Mines & Min. Resources Open File Rept. 92-10: 11 (Table 1;); USGS PP 318, Occurrence of non-pegmatite beryllium in the US: 102; USGS Kingman map; MRDS files #10026990, 10258902 & 10186783.

A former underground Au-Ag-Cu-Be-Mn mine located in sec. 5, T.21N., R.21W. Davis Dam 7.5 minute topo map), about 2 miles East of the Colorado River in the former Union Pass District. Owned at times, or in part by the New Comstock Mining Co. (1930-1931); and the Katherine Gold Mining Co. (1925-1929). The shaft collar is at 990 feet of altitude.

Mineralization is an epithermal vein of the Comstock type that strikes N.62ºE. and dips about vertically. It is a stringer lode that has a width of more than 60 feet (12 meters) at surface but narrows underground. Vein filling usually consists of a series of closely-spaced stringers in granite. In some places the vein filling was solid quartz and calcite up to 10, or more, feet wide. The mine is on a small knob of granite about 150 feet (45 meters) diameter. Mineralization also includes secondary copper minerals. The concentration process was copper stain, associated with calcocite, and local enrichment due to supergene processes. Host rock includes the Golden Door volcanics and the Times porphyry.

Workings include development to the 300 foot level, a new 900 foot deep shaft. The mine is opened for a 1,700 foot length. Started in 1900 and closed in 1904. Reopened 1915 and closed 1929, with presumed activity in 1930-31. This mine gave its name to the original Katherine District, later the Union Pass District, and now consolidated into the Oatman District.


Mineral List


6 valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Middle Pleistocene - Piacenzian
0.126 - 3.6 Ma



ID: 2954939
Early Pleistocene to latest Pliocene surficial deposits

Age: Cenozoic (0.126 - 3.6 Ma)

Description: Coarse relict alluvial fan deposits that form rounded ridges or flat, isolated surfaces that are moderately to deeply incised by streams. These deposits are generally topographically high and have undergone substantial erosion. Deposits are moderately to strongly consolidated, and commonly contain coarser grained sediment than younger deposits in the same area. (0.75-3 Ma)

Lithology: Major:{gravel,sand}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License



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