(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
Hornblende-cummingtonite amphibolite
pillow lava metamorphosed to zone 2
Sillimanite-staurolite-garnet-biotite-muscovite schist
sillimanite-rich
Schist
bedded, coarse
Garnet cordierite gneiss
contains melt-like aggregates
Pegmatite
cordierite-bearing
Gneiss
coarse-grained
Schist
thin oxide crust
Ultramafic rock
mostly hornblende
Gneiss
cordierite-bearing
Quartz-orthoclase-garnet-biotite-sillimanite-graphite-ilmenite-pyrrhotite schist
high-grade metamorphism