Zircon from selected localities.
USA | |
| [var: Cyrtolite] E.WM.Heinrich,1950,Paragenesis of the Rhodolite Deposit,Masons Mountain,North Carolina,The American Mineralogist,Vol.35 |
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |