GRD0204S0
M-217
Migmatitic Gneiss
Precambrian
542.0
-
3850.0
1
Ritter 154 › Cabinet 14 › Drawer I
coarse-grained
Large sample of biotite-potassium feldspar-garnet-quartz. Coarse-grained and well-foliated (large continuous bands/augens of kspar). Original description: PreC migmatite.
-
-
New York
Eastern Adirondacks
Latitude: 44.1°
Longitude: -73.8°
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Intergrown brown mica and opaques near a large garnet (right side of photomicrograph).
2.5
plane
Intergrown brown mica and opaques near a large garnet (right side of photomicrograph).
2.5
crossed
-
scan
crossed
GRD0204T0: Brown mica and opaques are intergrown. Garnet. Deformed perthitic potassium feldspar. Quartz. (J. Gee)
N/A
N/A