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Mohawk Silver Mine (Rosemont Mine), Rosemont (Rosemont Camp), Helvetia-Rosemont District, Santa Rita Mts, Pima Co., Arizona, USA

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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
Geologic Time:Calymmian
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 List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


4 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

Quaternary - Miocene
0 - 23.03 Ma



ID: 3185380
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. [154]

Olenekian - Ediacaran
247.2 - 635 Ma



ID: 2719534
Paleozoic sedimentary rocks

Age: Neoproterozoic to Triassic (247.2 - 635 Ma)

Description: Undivided Paleozoic limestone, dolostone, quartzite, shale, and related sedimentary rocks. (248-544 Ma)

Lithology: Major:{limestone,dolostone,quartzite}, Minor:{shale}

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



This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 92, 128.
Arizona Bureau of Mines Field Notes (1971): 1(2).
Drewes, H.D. (1971) Geologic map of the Sahuarita quadrangle, southeast of Tucson, Pima County, Arizona: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-613, 1 sheet, scale 1:48,000.
U.S. Bureau of Mines card file - unpublished crib file No. M002092.
MRDS database Dep. ID file #10103735, MRDS ID #M050048; and, Dep. ID #10113208, MAS ID #0040190523.

 
Mineral and/or Locality  
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