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USA | |
| Observation by Jeremy Zolan |
| Schooner, Richard. (circa 1985), Untitled manuscript on central Connecticut mineralogy. |
| Lundgren, Lawrence Jr. (1979) The Bedrock Geology of the Haddam Quadrangle. Quadrangle Report 37.. State Geological and Natural History Survey of Connecticut |
| www.maine.gov/doc/nrimc/mgs/explore/bedrock/b42/harpswell.htm |
| King, Vandall T., Foord, Eugene E. (1994) Mineralogy of Maine Vol. 1 - Descriptive mineralogy. Maine Geological Survey. |
| Schumacher and Robinson, 1987: Journal of Petrology 28 (6):1033-1073 |
| Schumacher, J.C. and Robinson, Peter (1987). Mineral chemistry and metasomatic growth of aluminous enclaves in gedrite-cordierite gneiss, southwestern New Hampshire, Journal of Petrology 28:1033-1073 |
| P Cristofono collection |
| SPEAR, F. S. (1982) Phase Equilibria of Amphibolites from the Post Pond Volcanics, Mt. Cube Quadrangle, Vermont. Journal of Petrology, 23 (3) 383-426 doi:10.1093/petrology/23.3.383 |
Pond Hill locality, Lisbon, Grafton County, New Hampshire, USA