GRD01XGS0
M-40
Greenschist
Unknown
None
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1
Ritter 154 › Cabinet 14 › Drawer D
medium-grained
Medium-sized sample of chlorite-quartz-biotite schist. Slightly banded: some bands of quartz. Other bands of fine-grained chlorite. Still other bands of chlorite with biotite porphyroblasts. Original description: Q-Bi schist/gneiss.
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Biotite (large) and chlorite (small) in quartz
5.0
plane
Biotite (large) and chlorite (small) in quartz
5.0
crossed
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scan
crossed
GRD01XGT0: 80% chlorite (large and small scaly crystals), 15% quartz, 5% biotite. Trace opaque oxides. Quartz vein running through the middle. (C. Eichler)
N/A
N/A