(WCM) Acadian Regional Metamorphism Suite -- Massachusetts
Title
(WCM) Acadian Regional Metamorphism Suite -- Massachusetts
Collection Items
Gedrite-cordierite rock
other minerals found include sillimanite, kyanite, and corundum
Sillimanite-staurolite-garnet-biotite-muscovite schist
sillimanite-rich
Garnet cordierite gneiss
contains melt-like aggregates
Gneiss
coarse-grained
Ultramafic rock
mostly hornblende
Quartz-orthoclase-garnet-biotite-sillimanite-graphite-ilmenite-pyrrhotite schist
high-grade metamorphism
Amphibolite
cummingtonite-poor, brownish-green hornblende dominated
Quartz-orthoclase-garnet-biotite-sillimanite-graphite-ilmenite-pyrrhotite schist
orthoclase is concentrated in watery clear megacrysts with crushed borders
Schist
aluminous
Hornblende-cummingtonite amphibolite
pillow lava metamorphosed to zone 2
Schist
bedded, coarse
Collection Tree
- [Unavailable]
- (WCM) Acadian Regional Metamorphism Suite -- Massachusetts