Sample: 81ARj 36
| Sample ID: | 81ARj 36 [1] |
| Station ID: | 81ARj 36 |
| 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: | older dome. Porphyritic dacite (S; high-silica andesite G). Strongly flow foliated, contains phenocrysts of plagioclase (An 60) and clinopyroxene in a devitrified groundmass. Minor alterations of phenocrysts in which clinopyroxene alters to bastite and opaque minerals. Abrupt transition in thin section from aphanitic to fine-grained groundmass. |
| Sample Location: |