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USA | |
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| 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. |
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| Chunzeng Wang, John F. Slack, Anjana K. Shah, Martin G. Yates, David R. Lentz, Amber T.H. Whittaker, Robert G. Marvinney
A RECENTLY DISCOVERED TRACHYTE-HOSTED RARE EARTH ELEMENT-NIOBIUM-ZIRCONIUM OCCURRENCE IN NORTHERN MAINE, USA. Economic Geology 2022
doi: https://doi.org/10.5382/econgeo.4993 |
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| King, Vandall T., Foord, Eugene E. (1994) Mineralogy of Maine Vol. 1 - Descriptive mineralogy. Maine Geological Survey. |
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| Emmons, William H. (1910) Some ore deposits in Maine and the Milan mine, New Hampshire. Bulletin Vol. 432. US Geological Survey doi:10.3133/b432 |
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| King, Vandall T., Foord, Eugene E. (1994) Mineralogy of Maine Vol. 1 - Descriptive mineralogy. Maine Geological Survey.
Morrill et al. 1958. |
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| King, Vandall T., Foord, Eugene E. (1994) Mineralogy of Maine Vol. 1 - Descriptive mineralogy. Maine Geological Survey. |
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| Arthur Smith (2003) "Is there any lead at the Porter Lead Mine?", Mineral News, 19, #3, 1-2. |
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| King, Vandall T., Foord, Eugene E. (1994) Mineralogy of Maine Vol. 1 - Descriptive mineralogy. Maine Geological Survey. |
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| King, Vandall T., Foord, Eugene E. (1994) Mineralogy of Maine Vol. 1 - Descriptive mineralogy. Maine Geological Survey. |
Morse Brook locality, Grafton, Oxford County, Maine, USA