Poplar Mountain Gneiss

(Probably correlates with Mount Mineral Formation but is more feldspathic) - Basal quartzite, where thick enough to map; commonly feldspathic, containing biotite and actinolite or muscovite.
State Massachusetts
Name Poplar Mountain Gneiss
Geologic age Proterozoic Z
Lithologic constituents
Major
Metamorphic > Metasedimentary > Metaclastic > Quartzitecommonly feldspathic, containing biotite and actinolite or muscovite
Comments Part of Bronson Hill Zone (Ordovician and Older Rocks)
References
NGMDB product
Counties Franklin - Hampshire