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Quartzite, quartz-biotite schist and graphitic schist

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In part feldspathic, micaceous, garnetiferous, sillimanitic.
State New York
Name Quartzite, quartz-biotite schist and graphitic schist
Geologic age Middle Proterozoic
Lithologic constituents
Major
Metamorphic > Schist > Mica-schistquartz-biotite schist and graphitic schist
Metamorphic > Metasedimentary > Metaclastic > Quartzite
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 - Hamilton - Jefferson - Saint Lawrence - Warren - Washington