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Collection: (LT) Littleton Formation Metamorphic Suite -- New Hampshire
Mica schist containing coarse (altered) andalusite crystals
Quartzose Mica Schist
Mica-based schist containing significant quartz
Sillimanite-bearing biotite schist
Muscovite-sillimanite schist where much of the sillimanite has been somewhat altered to muscovite. This sample may also contain muscovite pseudomorphs after staurolite.
Quartzose Mica schist
This foliated sample is dominated by micas and quartz. It is a sample from the Hubbard Hill member.
Synkinematic deformed gneiss w/ augen-like feldspar ribbons
Example of the Dakin Hill Member. Porphyroblastic gneiss.
Migmatitic biotite gneiss
Gneiss with a migmatitic fabric. Also contains quartz-feldspar pods.
Mica staurolite schist
Micaceous schist containing staurolite. Note that the staurolite is only found in the pelitic layers and is absent in the quartz-rich layers
Described as a "banded injection gneiss".
Mica-based schist containing porphyroblasts of andalusite (chiastolite) which have been partly retrograded to muscovite
Muscovite-biotite schist containing large sillimanite crystals-mostly retrograded to muscovite
Mica-based schist with porphyroblasts of staurolite.
Garnet staurolite schist
Micaceous schist containing porphyroblasts of garnet and staurolite.
Phyllite containing porphyroblasts of garnet
Sample contains porphyroblasts of poikilitic hornblende. Thought to represent Na-rich volcanic units.
Dark-colored slate that is slightly phyllitic.