GRD006MS0
I-247
Rhyolite
Cenozoic › Quaternary › Pleistocene
0.01
-
2.6
1
Ritter 154 › Cabinet 15 › Drawer F
resorption,Porphyritic
Vitrophyric dome. Multiple small samples.
-
Mono Craters
California
SW of Mono Craters
Latitude: 37.9°
Longitude: -119.0°
-
Euhedral and resorbed feldspar crystals. Resorbed crystals have rim overgrowths
2.5
plane
Twinning in euhedral sanidine
2.5
crossed
-
scan
crossed
GRD006MT0: plagioclase (albite and polysynthetic twinning), sanidine (oscillatory zoning)(resorption in larger crystals, some with rim overgrowths), orthopyroxene, biotite, opaques; fine grained basaltic clast (small and large plagioclase crystals, clinopyroxene) (C. Eichler)
N/A
N/A