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Fair Play Mine, Arivaca District (Las Guijas District), Las Guijas & San Luis Mts, Pima Co., Arizona, USA

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Latitude & Longitude (WGS84): 31° 31' 42'' North , 111° 21' 18'' West
Latitude & Longitude (decimal): 31.52833,-111.35500
GeoHash:G#: 9t8g659cb
Other regions containing this locality:Sonoran Desert, North America
Locality type:Mine
Köppen climate type:BSk : Cold semi-arid (steppe) climate


Ref.: Arizona Department of Mineral Resources (1962) file data.

Arizona Bureau of Mines file data, circa 1973.

U.S. Bureau of Mines - Arizona Bureau of Geology and Mineral Technology file data.

MRDS database Dep. ID file #10048089, MRDS ID #M800073; and, Dep. ID #10162060, MAS ID #0040190631.

A former small surface and underground Pb-Au-Cu-Ag-Zn mine located in the N½SW¼ sec. 7, T22S, R10E, ½ mile SW of the Edwards Mine. Produced 1931 and 1962 only. Operated by Howard Townsend and Lauritzen.

Mineralization is a vein deposit with an irregular ore body hosted in clastic sedimentary rocks.


No minerals currently recorded for this locality.

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]

Oxfordian - Hettangian
157.3 - 201.3 Ma



ID: 2847763
Jurassic volcanic rocks

Age: Jurassic (157.3 - 201.3 Ma)

Stratigraphic Name: Ali Molina Formation; Topawa Group; Mount Wrightson Formation; Canelo Hills Volcanics; Cobre Ridge Tuff; Black Rock volcanics; Planet Volcanics

Description: Massive quartz-feldspar porphyry, generally interpreted as thick, welded rhyolitic tuffs, with locally abundant lava, and sandstone and conglomerate derived from volcanic rocks. Rare eolian quartzite units are interbedded in southern Arizona. Includes Ali Molina Formation, Mount Wrightson Formation, part of the Canelo Hills Volcanics, Cobre Ridge tuff, Black Rock volcanics, Planet Volcanics, and equivalent rocks. (160-200 Ma)

Comments: The Jurassic quartz porphyry, Ali Molina, Mt Wrightson, Cobre Ridge, Black Rock volcanics, Planet Volcanics.

Lithology: Major:{rhyolite,sandstone,conglomerate}, Minor:{quartzite}

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



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