GRD0218S0
M-72
Non-layered Gneiss
Unknown
None
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1
Ritter 154 › Cabinet 24 › Drawer A
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Small sample of coarse-grained gneiss composed of potassium feldspar-quartz-muscovite. Discontinuous/lumpy banding (former augens?).
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Alpine
Latitude: 32.8°
Longitude: -116.8°
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Small band of muscovite in altered feldspar/quartz groundmass
2.5
plane
Small band of muscovite in altered feldspar/quartz groundmass
2.5
crossed
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scan
crossed
GRD0218T0: Scaly/marbled quartz and potassium feldspar. Small flecks of opaques. Discontinuous, small bands of opaques. (C. Eichler)
N/A
N/A