Pinnacle Formation - metawacke and phyllite member

Light-gray, medium-grained, massive quartz-sericite-chlorite-albite metawacke, gray to grayish-green magnetite-chlorite-muscovite-quartz schist, and phyllite or pebbly phyllite, locally rich in magnetite. Cover rocks of the Lincoln Mountain massif and northwestern flank of the Green Mountain massif.
State Vermont
Name Pinnacle Formation - metawacke and phyllite member
Geologic age Cambrian and Neoproterozoic
Lithologic constituents
Major
Metamorphic > Metasedimentary > Metaclastic > Metasandstone > MetagraywackeLight-gray, medium-grained, massive quartz-sericite-chlorite-albite metawacke.
Metamorphic > Schist > Mica-schist > Muscovite-schistGray to grayish-green magnetite-chlorite-muscovite-quartz schist, and phyllite or pebbly phyllite, locally rich in magnetite.
Metamorphic > Metasedimentary > Metaclastic > PhylliteGray to grayish-green magnetite-chlorite-muscovite-quartz schist, and phyllite or pebbly phyllite, locally rich in magnetite.
References
NGMDB product
Counties Addison - Rutland - Windsor