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Aroostook Co., Maine, USA

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Latitude & Longitude (WGS84): 46° 39' 31'' North , 68° 35' 55'' West
Latitude & Longitude (decimal): 46.6588112, -68.5988875

A large county with extensive forest cover. Bedrocks are low grade metasediments with some intrusive rocks. Area is noted for numerous manganese prospects. Manganese ores vary from manganoan magnetite through braunite and rare species.

Note: The geographic coordinates presented are taken from the Little Machias Lake topo map. The USGS GNIS database presents 163 sets of coordinates for this county.

Mineral List

Mineral list contains entries from the region specified including sub-localities

65 valid minerals. 4 erroneous literature entries.

Localities in this Region


The above list contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


Miller, Ralph L., 1947, Manganese Deposits of Aroostook County, Maine, Bulletin 4, Maine Geological Survey, Augusta, Maine, pp. 77 + plates.

Pavlides, Louis and Milton, Charles, 1962, Geology and Manganese Deposits of the Maple and Hovey Mountains Area, Aroostook County, Maine, USGS Professional Paper 362, pp. 116 + plates.

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