|Latitude & Longitude (WGS84):||31° 50' 21'' North , 109° 57' 16'' West|
|Latitude & Longitude (decimal):||31.83917,-109.95444|
|Other regions containing this locality:||Sonoran Desert, North America|
|Köppen climate type:||BSk : Cold semi-arid (steppe) climate|
A former small underground Cu-Pb-Zn-Ag-Au mine located in West-central sec. 25, T18S, R23E (Black Diamond Peak 7.5 minute topo map), approximately 1½ miles (2.2 km) SW of Black Diamond Peak, on private land. Produced 1921-1934. Operators included H. Hutchison, and J.S. Chambers.
Mineralization is base metal sulfides in small orebodies and vein-like deposits along faults in altered Cretaceous Bisbee Group limestone. Mineralization includes oxidized copper minerals.
Local structures include complex Tertiary faulting of Paleozoic and Cretaceous sediments. Tertiary intrusive beds strike NW and dip NE (variable). East-dipping, NW-trending thrust sheets dip steeply to overturned Cretaceous beds.
Workings include a shaft and adit. A few tons of ore were produced intermittently from 1921 to 1955.
Mindat ArticlesSilver Cloud Mine, Dragoon Mountains, Arizona by Rolf Luetcke
20 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
66 - 145 Ma
|Mesozoic sedimentary rocks|
Age: Cretaceous (66 - 145 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. 
|Serpukhovian - Early Cambrian|
323.2 - 541 Ma
|Mississippian, Devonian, and Cambrian sedimentary rocks|
Age: Paleozoic (323.2 - 541 Ma)
Description: Brown to dark gray sandstone grades upward into green and gray shale, overlain by light to medium gray or tan limestone and dolostone. This unit includes the Tapeats Sandstone, Bright Angel Shale, Muav Limestone, Temple Butte Formation and Redwall Limestone in northern Arizona, and the Bolsa Quartzite, Abrigo Formation, Martin Formation, and Escabrosa Limestone in southern Arizona. These rocks record intermittent sea-level rise and inundation in early Paleozoic time. (330-540 Ma)
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.