GRD000OS0
I-25
Granodiorite
Mesozoic › Cretaceous
65.5
-
145.5
1
Ritter 154 › Cabinet 15 › Drawer N
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Original label: Sphene bearing Q diorite.
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-
California
Anza Borrego Desert
Latitude: 33.3°
Longitude: -116.4°
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Plagioclase
2.5
plane
Plagioclase with polysynthetic twinning. Slightly perthitic?
2.5
crossed
-
scan
crossed
GRD000OT0: 50% Plagioclase (polysynthetic twinning), 35% quartz, 8% Biotite, 5% Amphibole, 2% sphene, trace apatite (inclusions in biotite and quartz). (C. Eichler)
N/A
N/A