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USA | |
| Bernard, Jan, Hyršl, Jaroslav (2004) Minerals and their Localities (1st ed.) Granit, Prague. |
| Catlos, E. J., & Miller, N. R. (2016). Ion microprobe 208Th-208Pb ages from high common Pb monazite, Morefield Mine, Amelia County, Virginia: Implications for Alleghanian tectonics. American Journal of Science, 316(5), 470-503. |
Morefield Mine, Winterham, Amelia County, Virginia, USA