Glen claims, Papago District (Sierrita District), Sierrita Mts, Pima Co., Arizona, USA
This page is currently not sponsored. Click here to sponsor this page.
US Atomic Energy Commission Preliminary Reconnaissance Report Pima County (1951): 622, 634.
Granger, H.C. & R.B. Raup (1962), Reconnaissance study of uranium deposits in Arizona, USGS Bull. 1147A: A30.
U.S. Atomic Energy Commission RME-159 (1970) Preliminary Reconnaissance for Uranium in Pima and Pinal Counties, Arizona, 1950 to 1957: 13, 59.
MRDS database Dep. ID file #10039557, MRDS ID #M050277; and, Dep. ID #10259545, MAS ID #0040190231.
A group of surface U claims/occurrence/prospect located in the NW ¼, sec. 30, T.17S., R.11E., on the NW flank of the Sierrita Mountains and about 28 miles SSW of Tucson & about 1 mile SSE of the Black Dike deposit. The property covers 4,500 hectares. Leased to Albert Ybarra & Glen Allen of Tucson (1951).
Mineralization is a lenticular ore body 60.96 meters long, 1.83 meters wide and 30.48 meters thick. Radioactive material occurs in and along a breccia zone that strikes N.20ºW. & dips about 80ºSW. The breccia zone contains a silicified core about 6 feet wide from which highly fractured rocks entends several feet on either side. Ore control was the hanging wall of the breccia zone contact with the granite. Radioactive zone is a few feet wide and marked by red, brown, and white stains, and pyrite. Ore concentration was actually deconcentration caused by leaching an weathering. There is much alteration of seritization (?) and silicification. The host rock is granite.
A 4-foot channel sample contained 0.015% U, radioactivity equivalent to 0.035% U. came from a rock sample south lot opencut - 0.027% U, radioactivity = 0.080% U.
Workings include an open cut about 15 feet long by 5 feet wide and 6 feet deep at greatest depth.
Lack of equilibrium in samples indicates that rock in the outcrop has been considerably leached and weathered & uranium is probably more abundant in fresh rock below.
3 entries listed. 1 valid mineral.
The above list 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.