Sample: AK-81-50
Sample ID: | AK-81-50 [1] |
Station ID: | AK-81-50 |
AT Num: | |
Volcano: | Akutan |
Possible source: | |
Eruption: | |
Collector: | Unknown, Unknown |
Date sampled: | 1981-01-01 |
Sample type 1: | Lava |
Color: | |
Final unit: | |
Text Description: | Slightly altered porphyritic andesite dike. Plagioclase and clinopyroxene phenocrysts in a holocrystalline groundmass. The clinopyroxene exhibits two periods of growth: an early stage as independent phenocrysts and a late stage where it ophitically encloses groundmass plagioclase laths. The two stages are optically continuous. |
Sample Location: |