Columbite-(Fe) from selected localities.
USA | |
| Van King |
| Clifford Trebilcock |
Van King; W. B. Thompson, D. L. Joyner, R. G. Woodman, and V. T. King (2005) A Collector's Guide to Maine Mineral Localities. Maine Geological Survey Bulletin 41 | |
| Jeffrey Morrison, William Simmons, Alexander Falster, Encar Roda Robles (2018) The havey gem tourmaline pegmatite, Poland, and roscoggin county, maine – an example of highly |
Minot #2 prospect, Minot, Androscoggin County, Maine, USA