GRD029MS0
M-141
Relict Textures
Precambrian › Archean
2500.0
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3850.0
0
Ritter 154 › Cabinet 14 › Drawer O
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Deformed/flattened quartzite pebbles in a gneissic matrix. Quartz-potassium feldspar- biotite-muscovite (trace)- amphibole (trace). Biotite mantles the quartzite pebbles. Original label: porphyroblastic gneiss.
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Arizona
Grand Canyon
Latitude: 36.1°
Longitude: -112.1°
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