Columbite-(Fe) from selected localities.
USA | |
| http://coromotominerals.com/index.html; SEM-EDS analysis of the ferrocolumbite; King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1. |
| Van King; Cameron, Eugene N.; and others (1954) Pegmatite investigations, 1942-45, in New England. USGS Professional Paper 255. |
| Van King |
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 | |
Van King |
Orchard Quarry, Buckfield, Oxford County, Maine, USA