Bunker Hill South - adits (Yellow Jacket; Vella claim), Bunker Hill Mine (Bunker Hill group), Mulberry Wash, Sombrero Butte, Sombrero Butte peak area, Bunker Hill District (Copper Creek District), Galiuro Mts, Pinal Co., Arizona, USA
|Latitude & Longitude (WGS84):||32° 44' 4'' North , 110° 28' 29'' West|
|Latitude & Longitude (decimal):||32.73444,-110.47472|
|Köppen climate type:||BSk : Cold semi-arid (steppe) climate|
A former surface and underground Cu-Ag-Mo-Pb-Au mine workings located in the NE¼SW¼ sec. 14, T8S, R18E (Rhodes Peak 7.5 minute topo map), just E of the Sombrero Butte ghost town and about 2 miles N of Sombrero Butte (peak), on land of mixed status. Owned by Bunker Hill Copper Co. of Arizona (1918). Additional names which pertain to this property: Dixon Camp; Copper Bell; Clipper; and Black Metals.
Mineralization includes oxidized copper minerals.
Regions containing this locality
Desert - 1,135 mineral species & varietal names listed
List of minerals for each chemical element
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
|Quaternary - Miocene|
0 - 23.03 Ma
|Cenozoic sedimentary rocks|
Age: Cenozoic (0 - 23.03 Ma)
Lithology: Sedimentary rocks
Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. 
|Ypresian - Campanian|
47.8 - 83.6 Ma
|Early Tertiary to Late Cretaceous granitic rocks|
Age: Phanerozoic (47.8 - 83.6 Ma)
Description: Porphyritic to equigranular granite to diorite emplaced during the Laramide orogeny. Larger plutons are characteristically medium-grained, biotite +/- hornblende granodiorite to granite. Smaller, shallow-level intrusions are typically porphyritic. Most of the large copper deposits in Arizona are associated with porphyritic granitic rocks of this unit, and are thus named 'porphyry copper deposits'. (50-82 Ma)
Comments: Laramide metaluminous; associated with porphyry Cu deposits Original map source: Arizona Geological Survey, DI-8 Geologic Map of Arizona, Digital Spatial data for the Geologic Map of Arizona, v. 3.0, edited by S.M. Richard and S.M. Kneale, 2002, 10 p., 2 DOS HD disks. Arc/INFO export file (.e00) format, scale 1:1,000,000.
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.