GRD00GES0
I-675
Ignimbrite
Cenozoic › Paleogene › Oligocene
23.0
-
33.9
1
Ritter 154 › Cabinet 15 › Drawer K
-
Rhyolite tuff (prominent smoky Q-San-Olig-Ga-Topaz)
-
-
Colorado
Chaffee County
Latitude: 38.7°
Longitude: -106.2°
-
Plagioclase
5.0
plane
Simple twinning in plagioclase
5.0
crossed
-
scan
crossed
GRD00GET0: Plagioclase (simple and polysynthetic twinning), sanidine (polysythetic twinning) quartz, and opaques in fine grained matrix. (C. Eichler)
N/A
N/A