GRD020TS0
M-322
Augen Gneiss
Precambrian › Proterozoic › Mesoproterozoic
1000.0
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1600.0
0
Ritter 154 › Cabinet 24 › Drawer A
augen
Large sample of a gneiss composed of biotite- potassium feldspar- quartz- pyrite (rare). Potassium feldspar augen and no banding. The largest augen has a bleb of pyrite inside. Original description: Augen gneiss. Microcline porphyroblasts replacing metagreywacke. Qtz-biotite-garnet-microcline. Granulite facies.
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New York
Northwest Adirondacks
Latitude: 44.3°
Longitude: -74.8°
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