Mohawk Silver Mine (Rosemont Mine), Rosemont (Rosemont Camp), Helvetia-Rosemont District, Santa Rita Mts, Pima Co., Arizona, USA
|Latitude & Longitude (WGS84):||31° 49' 2'' North , 110° 46' 0'' West|
|Latitude & Longitude (decimal):||31.81750,-110.76694|
|Other regions containing this locality:||Sonoran Desert, North America|
|Age:||1450 ± 10 Ma|
|Köppen climate type:||BSk : Cold semi-arid (steppe) climate|
A former small underground Zn-Pb-Cu-Ag mine located in the E½NW¼ sec. 1, T19S, R15E, 28 miles SE of Tucson, on patented (private ) land. Produced ? - 1946. Owned/operated by Rosemont Mining (1974).
Mineralization is an ore zone striking N10E and dipping 70E, hosted in the Glance Conglomerate. Ore control was faults. Ore concentration was permeable fracture zones. Alteration includes pyrite-gossan. An associated rock unit is Precambrian granodiorite at 1,450 MY ± 10 MY.
Local structures include thrust and normal faulting - fracture zones; homoclinal. Regional trends include tilting and broad open folds in the south and extensive faulting in the north.
Commodity ListThis is a list of exploitable or exploited mineral commodities recorded at this locality.
4 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
|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. 
|Olenekian - Ediacaran|
247.2 - 635 Ma
|Paleozoic sedimentary rocks|
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.