GRD0045S0
I-157
Basalt
Cenozoic › Quaternary
0.01
-
2.6
1
Ritter 154 › Cabinet 20 › Drawer E
-
Fine grained fissile lava flow. Thin section extremely different than hand sample (wrong number?).
-
Tristan Da Cunha
Tristan da Cunha: 100 yards W of Pinnacle, Hottentot gulch, 900 elev
-
Sanidine and small biotite in fine grained matrix
5.0
plane
Sanidine crystals in fine matrix
5.0
crossed
-
scan
crossed
GRD0045T0: Small phenocrysts of sanidine, biotite. Altered? (C. Eichler)
N/A
N/A