Ref.: US Atomic Energy Commission Preliminary Reconnaissance Report Pima County (1957): 722.
U.S. Atomic Energy Commission RME-159 (1970) Preliminary Reconnaissance for Uranium in Pima and Pinal Counties, Arizona, 1950 to 1957.
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10095787, MRDS ID #M800301; and, Dep. ID #10161812, MAS ID #0040190230.
A former surface and underground Ag-Cu-Au-U mine/group of claims with surface and underground workings located in the NE¼ sec. 5, T21S, R10E, on the NE end of Las Guijas Mountain, on private land. Owned by E.C. Bolton (1957).
Mineralization is a vein deposit related to fault fissure veins hosted in granite. The ore zone strikes E-W and dips 75-85N. The host granite is medium-grained and light coloured. Radioactivity: background 0.03-0.05 mr/hr, max 1.0 mr/hr. Uranium minerals identified in a "Taxpayers sample" by the U.B. Bureau of Mnes. Idle since 1949.
Workings are 30 meters long and 30.48 meters deep.
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Map Reference: 31°38'3"N , 111°20'11"W
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