Little Joe Mine (Little Joseph Mine; Columbia Gold Mining property; Patented claims MS 1832; Acquisition Mine [?]), Columbia, Hum Bug District, Bradshaw Mts (Bradshaw Range), Yavapai Co., Arizona, USA
|Latitude & Longitude (WGS84):||34° 3' 6'' North , 112° 17' 59'' West|
|Latitude & Longitude (decimal):||34.051666259765625, -112.29972076416016|
‡Ref.: Lindgren, W. (1926), Ore deposits of the Jerome and Bradshaw Mountains quadrangles, Arizona, USGS Bull. 782: 178-179.
U.S. Bureau of Mines - Arizona Bureau of Geology and Mining Technology file data.
Arizona Department of Mineral Resources file data.
USGS Columbia Quadrangle map.
Arizona Department of Mineral Resources Little Joseph Mine file.
U.S. Bureau of Land Management Mining District Sheet 3.
Yale Peabody GNIS database (NOTE: this database is derived from USGS 1:24,000 topographic map data).
MRDS database Dep. ID #10048066, MRDS ID #M800037; and Dep. ID #10186332, MAS ID #0040251298.
A former underground Ag-Cu-Au-Pb-As mine. Discovered by Charles Champie in 1886. Produced 1890-1939. Claims extend into the W½W½E¼ of sec. 7.
Mineralization is a vein deposit with a tabular ore body. Ore control was faulting and shearing. Ore concentration was oxidation at near surface. Alteration was sericitization adjacent to some dikes. An associated rock unit is the Crazy Basin Quartz Monzonite and rhyolite porphyry dikes.
Area structures include veins parallel to rhyolite porphyry dikes and foliation in Precabrian xenoliths (quartz-mica schist) that trends N40-50E.
5 valid minerals.
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
1600 - 1800 Ma
|Early Proterozoic granitic rocks|
Age: Statherian (1600 - 1800 Ma)
Description: Wide variety of granitic rocks, including granite, granodiorite, tonalite, quartz diorite, diorite, and gabbro. These rocks commonly are characterized by steep, northeast-striking foliation. (1600-1800 Ma)
Comments: ~ 1.6 - 1.8 Ga
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.