GRD0201S0
M-163
Non-layered Gneiss
Unknown
None
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0
Ritter 154 › Cabinet 24 › Drawer A
coarse-grained
Slightly foliated and banded; Leucocratic layer is composed of potassium feldspar-quartz-amphibole. Melanocratic layer is composed of phologopite-biotite-amphibole.
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