| | Description | |
| Comments: | Occurs in black sands over an area of several miles across. | | Quality of samples: | not specified / average specimens | | Confirmation | |
| Validity: | Believed Valid | | References | |
| References: | Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 104; Adams, J.W. & M.H. Staatz (1969), Rare earths and thorium, in Mineral and water resources of AZ, AZ Bur. of Mines Bull. 180: 245-251. | | Data | |
| Mineral Data: | Click here to view Allanite-(Ce) data | | Locality Data: | Click here to view 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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