Massive to weakly foliated, pink and gray, fine- to medium-grained biotite granite (MAPAgr;0)

Massive to weakly foliated, pink and gray, fine- to medium-grained biotite granite - 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
Original map label	Pgr
Comments	Part of Merrimack Belt (Silurian, Devonian and Pennsylvanian Rocks)
Primary rock type	granite
Secondary rock type	pegmatite
Other rock types
Lithologic constituents	Major Igneous > Plutonic > Granitic > Leucocratic-granitic > Pegmatitecommonly contains pink magnetite-bearing pegmatite Igneous > Plutonic > Granitic > GraniteMassive to weakly foliated, pink and gray, fine- to medium-grained biotite granite.
Map references	Unpublished Digital Geologic Map of Massachusetts received from Rudi Hon at Boston College in 1998.
Unit 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., Wones, D.R., 1983, Bedrock Geologic Map of Massachusetts: U.S. Geological Survey, Reston, VA, scale 1: 250,000.
Geographic coverage	Middlesex