GRD0009S0
I-9
Granite
Precambrian › Proterozoic › Mesoproterozoic › Stenian
1000.0
-
1200.0
1
Ritter 154 › Cabinet 15 › Drawer A
perthite
Eastern edge of Adirondacks (Grenville?). Original label: Graphite-bearing.
Lupulescu et al., 2016, Mineville-Ft. Henry field guide
-
New York
Mineville
Latitude: 44.1°
Longitude: -73.5°
-
Perthitic potassium feldspar
2.5
crossed
-
scan
crossed
GRD0009T0: 45% K-spar (perthitic), 30% quartz, 15% plagioclase (albite twinning), 10% hornblende, <1% garnet, <1% zircon (present as inclusions). (C.Eichler)
N/A
N/A