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Linda Lee claims, Quijotoa (Covered Wells), Quijotoa District, Quijotoa Mts, Tohono O'odom (Papago) Indian Reservation, Pima Co., Arizona, USA

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Latitude & Longitude (WGS84): 32° 7' 48'' North , 112° 7' 36'' West
Latitude & Longitude (decimal): 32.13, -112.126666667
A group of Au-U-Th-REE claims and former small surface and underground mine with surface and underground workings, located in sec. 12, T15S, R2E, 2 miles south of Covered Wells and 2¼ miles SSW of the Quijotoa Trading Post, on the eastern flank of the Quijotoa Mountains. This is also an old gold placer area. Unsurveyed indian reservation location is approximate. Indian reservation land lines are unsurveyed.

Location given as: From Sells go NW toward Ajo for 19.8 miles; turn left on Quijotoa Road and proceed for 1.8 miles. Turn right just past the white house and go 0.4 miles to the property.

Mineralization is a vein deposit 213.36 meters long and 0.46 meters wide, that occurs as a roughly north-south zone cutting through quartz monzonite. The vein has several offsets due to faulting. The north end of the deposit disappears in a spessartite intrusion which also cuts the quartz monzonite. The south end of the zone was not defined although it was traced for about two miles along the strike.

The spessartite is well exposed in the north pit and is dense, green rock with megascopically visible grains of yellow titanite. Thin sections reveal early, euhedral actinolite crystals in a groundmass of later andesine. The early actinolites are pseudomorphically replaced by single epidote crystals which, in turn, are often replaced by a second generation of small to microlitic actinolites.

Workings include several pits in washes and one small shaft. Workings depth is only 4.57 meters.

Mineral List

22 entries listed. 15 valid minerals.

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Robinson, R.L. (1955), Linda Lee claims, Pima County, Arizona, U.S. Atomic Energy Commission Preliminary Reconnaissance Report A-P-331: 667.

Williams, S.A. (1960), A new occurrence of allanite in the Quijotoa Mountains, Pima County, Arizona, Arizona Geological Society Digest: 3: 46-51.

U.S. Atomic Energy Commission RME-159 (1970) Preliminary Reconnaissance for Uranium in Pima and Pinal Counties, Arizona, 1950 to 1957.

Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 241, 397, 399, 408.

Arizona Bureau of Mines file data.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10026743, MRDS ID #M000028; and, Dep. ID #10258874, MAS ID #0040190293.

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