Spinel from Maine, USA
USA | |
| Guidebook 1 to Mineral Collecting in the Maine Pegmatite Belt Pg. 3 |
| www.maine.gov/doc/nrimc/mgs/explore/bedrock/b42/harpswell.htm |
| Rainville, G. D. and Park, W. C. (1976) Nickeliferous Pyrrhotite Deposits, Knox County, Southeastern Maine in Lyons, P. C. and Brownlow, A. H. (editors) Studies in New England Geology, Memoir 146, Geological Society of America, p. 319-347. |
| Thompson, Woodrow B., Joyner, Ronald L., Woodman, Raymond G., King, Vandall T. (1998) Bulletin (41), A Collector's Guide to Maine Mineral Localities (3rd ed.) Maine Geological Survey |
| Morrill et al. (1958) |