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Massive to weakly foliated, pink and gray, fine- to medium-grained biotite granite

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In the Townsend area; commonly contains pink magnetite-bearing pegmatite identical to granite of Milford, New Hampshire; intrudes OZma and Sp.
State Massachusetts
Name Massive to weakly foliated, pink and gray, fine- to medium-grained biotite granite
Geologic age Pennsylvanian
Lithologic constituents
Major
Igneous > Plutonic > Granitic > GraniteMassive to weakly foliated, pink and gray, fine- to medium-grained biotite granite.
Igneous > Plutonic > Granitic > Leucocratic-granitic > Pegmatitecommonly contains pink magnetite-bearing pegmatite
Comments Part of Merrimack Belt (Silurian, Devonian and Pennsylvanian Rocks)
References

Zen, E-An (ed.), Goldsmith, R. (comp.), Ratcliffe, N.M. (comp.), Robinson, P. (comp.), Stanley, R.S. (comp.), Hatch, N.L., Jr., Shride, A.F., Weed, E.G.A., and Wones, D.R., 1983, Bedrock Geologic Map of Massachusetts: U.S. Geological Survey, Reston, VA, scale 1: 250,000.

https://pubs.er.usgs.gov/publication/70046713
NGMDB product
Counties Middlesex