Columbite-(Fe)-Columbite-(Mn) Series from selected localities.
USA | |
| Weber, Marcelle H. and Earle C. Sullivan. (1995): Connecticut Mineral Locality Index. Rocks & Minerals (Connecticut Issue): 70(6): 397. |
| Rocks & Minerals (1995) 70:396-409; Rocks & Minerals (1995) 70:396-409 |