Spodumene from Fremont County, Wyoming, USA
USA | |
| 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). |
| Hausel, W. Dan (2000) Gemstones And Other Unique Minerals And Rocks Of Wyoming: A Field Guide For Collectors. Bulletin 71. Wyoming Geological Survey |