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USA | |
| Januzzi, 1976. Mineral Localities of CT & Southeastern NY State, p.229, 235 Schooner, Richard. (circa 1980s), Untitled manuscript on central Connecticut minerals. |
| Pavlides, Louis and Milton, Charles, 1962, Geology and Manganese Deposits of the Maple and Hovey Mountains Area, Aroostook County, Maine, U. S. Geological Survey Professional Paper 362, pp. 116 + plates. |
| Pavlides, Louis and Milton, Charles, 1962, Geology and Manganese Deposits of the Maple and Hovey Mountains Area, Aroostook County, Maine, U. S. Geological Survey Professional Paper 362, pp. 116 + plates. |
| Pavlides, Louis and Milton, Charles, 1962, Geology and Manganese Deposits of the Maple and Hovey Mountains Area, Aroostook County, Maine, U. S. Geological Survey Professional Paper 362, pp. 116 + plates. |
| www.mindat.org (2003) https://www.mindat.org/min-3322.html Found in association with Ilmenite. Collected during ongoing study by Lloyd W. Alexander. Confirmed by Al Falster. 2022 |
| King, Vandall T., Foord, Eugene E. (1994) Mineralogy of Maine. Maine Geological Survey. |
Symmes Pond Syenite, Straw Hill occurrence, Newfield, York County, Maine, USA