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Biotite-quartz-plagioclase paragneiss, amphibolite, and related migmatite

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Locally sillimanitic; commonly garnetiferous in and adjacent to Adirondack Highlands.
State New York
Name Biotite-quartz-plagioclase paragneiss, amphibolite, and related migmatite
Geologic age Middle Proterozoic
Lithologic constituents
Major
Metamorphic > Metasedimentary > ParagneissBiotite-quartz-plagioclase paragneiss
Minor
Metamorphic > Migmatite
Metamorphic > Amphibolite
References

Fisher, D.W., Isachsen, Y.W., and Rickard, L.V., 1970, Geologic Map of New York State, consisting of 5 sheets: Niagara, Finger Lakes, Hudson-Mohawk, Adirondack, and Lower Hudson, New York State Museum and Science Service, Map and Chart Series No. 15, scale 1:250,000.
NGMDB product
Counties Essex - Jefferson - Lewis - Saint Lawrence - Warren - Washington