Sample: 81ARj 18
Sample ID: | 81ARj 18 [1] |
Station ID: | 81ARj 18 |
AT Num: | |
Volcano: | Kialagvik |
Possible source: | |
Eruption: | |
Collector: | Riehle, J. R. |
Date sampled: | 1981-01-01 |
Sample type 1: | Lava |
Color: | |
Final unit: | |
Text Description: | Two pyroxene-plagioclase dacite (S; high-silica andesite G) porphyry. Phenocrysts of orthopyroxene and clinopyroxene in a fine-grained groundmass. Orthopyroxene dominates. Many phenocrysts are in reaction relation with groundmass, and groundmass appears recrystallized. |
Sample Location: |