GRD001US0
I-69
Welded Ignimbrite
Cenozoic › Neogene › Miocene
5.3
-
23.0
1
Ritter 154 › Cabinet 15 › Drawer L
altered
-
-
Old Dad Mtns
California
Old Dad Mtns, Amboy
Latitude: 34.8°
Longitude: -115.8°
-
small plagioclase in fine matrix
2.5
plane
Small plagioclase displaying polysynthetic twinning
2.5
crossed
-
scan
crossed
GRD001UT0: Altered, sanidine, biotite (C. Eichler)
N/A
N/A