Monazite from Larimer County, Colorado, USA
USA | |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| 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). |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |