GRD02F3S0
M-212
Non-layered Gneiss
Unknown
None
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1
Ritter 154 › Cabinet 14 › Drawer A
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Plagioclase-quartz-biotite-magnetite (trace) gneiss. Original description: Deformed granite.
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Biotite with muscovite rims
2.5
plane
Biotite with muscovite rims
2.5
crossed
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scan
crossed
GRD02F3T0: 55% quartz, 30% biotite, 15% muscovite, opaques (trace). Brown flecks are biotite with muscovite rims. Different grain sizes- Recrystallization? Deformed fault rock with cobbles? (J. Gee)
N/A
N/A