GRD00I2S0
I-735
Granite
Precambrian › Proterozoic › Mesoproterozoic › Stenian
1000.0
-
1200.0
1
Ritter 154 › Cabinet 15 › Drawer B
coarse grained
porphrytic, pink and white feldspars with biotite and hornblende; part of several ~1800 Ma granitoid intrusions
-
-
Minnesota
St. Cloud
Latitude: 45.5°
Longitude: -94.2°
-
Inclusions in embayed biotite surrounded by feldspar
2.5
plane
Inclusions in embayed biotite surrounded by feldspar
2.5
crossed
-
scan
crossed
GRD00I2T0: Quartz, k-spar, biotite (zircon inclusions with radiation halos), hornblende. Nice thin section. (C. Eichler)
N/A
N/A