GRD01Y0S0
M-305
Lineation
Unknown
None
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1
Ritter 154 › Cabinet 14 › Drawer P
medium-grained,lineations
A slab of gneiss composed of quartz-plagioclase-biotite. Well-foliated and medium- to coarse-grained. A nice example of a lineated gneiss.
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5.0
plane
Plagioclase (polysynthetic twinning)
5.0
crossed
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scan
crossed
GRD01Y0T0: 50% quartz, 35% plagioclase (polysynthetic twinning), 10% biotite, 5% colorless and high relief, trace opaque oxides (J. Gee)
N/A
N/A