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Wildcat Mine (Wild Cat group of claims), Temporal Gulch, Wrightson District, Santa Rita Mts, Santa Cruz Co., Arizona, USA

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Latitude & Longitude (WGS84): 31° 39' 54'' North , 110° 50' 36'' West
Latitude & Longitude (decimal): 31.66500,-110.84333
Other regions containing this locality:Sonoran Desert, North America


‡Ref.: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 237.

USGS Mt Wrightson 7.5 minute topo map.

U.S. Bureau of Mines field notes, AU19.

MRDS database Dep. ID file #10210534, MAS ID #0040230406.

A former underground Au-Cu-Ag mine/group of claims located in the NE¼SE¼ sec. 30, T20S, R15E, about 1 mile SSW of Josephine Peak and 1½ miles west of the Walker Mine, in the head of Temporal Gulch, at an elevation of about 6,500 feet, on National Forest land. The camp is located just east of the crest of the range. Discovered in 1880 and was relocated in 1907 by F.B. Sayer, R.T. Stump, and others, owners (circa 1907-1915).

The country rock is coarse-grained diorite, some of which is nearly black, representing a very basic segregation, and apparently stands near anorthosite.

The deposits occur principally in a rhyolite dike or ledge 200 feet wide which cuts the diorite. In the lower tunnel, where it makes the best showing, the dike contains numerous east-west seams, stringers, or parallel veins, the largest about 1 inch (2.5 cm) wide, which are composed of massive crystalline pyrite with some chalcopyrite. The ledge extends for ½ mile east of the prospect and for a considerable distance to the west across the divide into Josephine Canyon. Some sulphur and alum are leached out on its surface, and the diorite on the north contains a small deposit of specularite.
Workings include 2 tunnels, each about 200 feet long, spaced about 130 feet apart vertically and 1,000 feet horizontally.

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

Oxfordian - Hettangian
157.3 - 201.3 Ma
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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