GRD01X1S0
M-57
Folds
Unknown
None
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1
Ritter 154 › Cabinet 14 › Drawer P
folds
Well-developed foliation. Quartz-biotite-phologopite(?) gneiss. Small ptygmatic folds.
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New Zealand
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A small fold composed of biotite. Quartz groundmass.
2.5
plane
A small fold composed of biotite. Quartz groundmass.
2.5
crossed
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scan
crossed
GRD01X1T0: 97% quartz, 2% biotite, 1% plagioclase. The biotite and plagioclase are concentrated in tight folds. (C. Eichler)
N/A
N/A