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USA | |
| Izett, G. A., & Wilcox, R. E. (1968). Perrierite, chevkinite, and allanite in upper Cenozoic ash beds in the western United States. American Mineralogist: Journal of Earth and Planetary Materials, 53(9-10), 1558-1567. |
- Haystack Range Pegmatite District
| Osterwald, F. W. and D. B. Osterwald (1952) Wyoming Mineral Resources. Wyoming Geological Survey Bulletin 45 Hanley, J.B., Heinrich, E.W., Page, L.R. (1950) Pegmatite investigations in Colorado, Wyoming, and Utah, 1942-1944. Professional Paper 227. US Geological Survey doi:10.3133/pp227 |
| Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 34 (Table A-1). Hanley, J.B., Heinrich, E.W., Page, L.R. (1950) Pegmatite investigations in Colorado, Wyoming, and Utah, 1942-1944. Professional Paper 227. US Geological Survey doi:10.3133/pp227 |
| Hanley, J.B., Heinrich, E.W., Page, L.R. (1950) Pegmatite investigations in Colorado, Wyoming, and Utah, 1942-1944. Professional Paper 227. US Geological Survey doi:10.3133/pp227 |