Cottonwood Ranch Th-REE deposit, Cottonwood Ranch, Pima District (Olive District; Mineral Hill District; Twin Buttes District), Sierrita Mts, Pima Co., Arizona, USA
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Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 104.
MRDS database Dep. ID file #10162334, MAS ID #0040190617.
A surface placer Th-REE occurrence located in T16S, R12E, 11 miles SW (SE ?) of the San Xavier Mission on the Cottonwood Ranch.
Mineralization is an allanite-bearing placer deposit severalm miles across.
1 entry listed. 1 valid mineral.
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