GRD0029S0
I-87
Granite
Precambrian › Proterozoic
542.0
-
2500.0
1
Ritter 154 › Cabinet 15 › Drawer B
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Algeria
Original lat and long (0.6W, 23.0 N)
Latitude: 22.99°
Longitude: -0.59°
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Tartan twinning in k-spar
2.5
crossed
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scan
crossed
GRD0029T0: 55% microcline, 40% quartz, 3% biotite, 2% opaques, <1% zircons (inclusions in biotite) (C. Eichler)
N/A
N/A