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USA | |
| Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 31 (Table A-1). |
| Pearl, 1958. Colorado Gem Trails & Mineral Guide Pearl, 1958. Colorado Gem Trails & Mineral Guide |
| Beaver, 1953 Heinrich & Beaver, 1957 Geology and Resources of Park County, Colorado |
| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. 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 |
| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |
- Tarryall Springs Mining District (Puma City)
| Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 31 (Table A-1). |
| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |
| Rhiana E. Henry, Charles Stern, Markus B. Raschke, Julien M. Allaz,Evan J. D. Anderson, Alexandra Skewes (2016) Rare Earth Element Pegmatites in the South Platte Region of Colorado. in Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado Markus B. Raschke, Evan J. D. Anderson, Alexandra Skewes, Julien M. Allaz, Charles Stern, Philip M. Persson, Rhiana Henry, Katharina Pfaff (2016) Mineralogy and petrology of a new REE pegmatite near Wellington Lake, in relation to the South Platte Pegmatite district, Colorado (USA). in Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado |
Meyers Ranch, Guffey Mining District, Park County, Colorado, USA