Niobium-bearing Rutile from selected localities.
USA | |
| Belakovskiy, D.I., Pautov, L.A., Sokolova, E., Hawthorne, F.C., Mokhov, A.V. (2006) Holfertite, a new mineral from Thomas Range, Utah, USA. The Mineralogical Record: 37: 311-317. |
| MinRec. 26:123 |