GRD020KS0
M-62
Crenulation Cleavage
Unknown
None
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1
Ritter 154 › Cabinet 24 › Drawer I
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Quartz-plagioclase-muscovite-biotite gneiss with folds (crenulation cleavage) with slight lineations. Well-developed foliation and thin continuous bands.
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California
Alpine
Latitude: 32.8°
Longitude: -116.8°
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Thin bands of muscovite and biotite
2.5
plane
Thin bands of muscovite and biotite
2.5
crossed
-
scan
crossed
GRD020KT0: 60% quartz, 20% plagioclase, 15% muscovite, 5% biotite. Crenulations not obvious in thin section. (C. Eichler)
N/A
N/A