Sample: 96-Mc-34
| Sample ID: | 96-Mc-34 [1] [2] |
| Station ID: | 96-Mc-34 |
| AT Num: | |
| Volcano: | Akutan |
| Possible source: | |
| Eruption: | |
| Collector: | McGimsey, R. G. |
| Date sampled: | 1996-00-00 |
| Sample type 1: | Lava |
| Color: | medium gray |
| Final unit: | pap |
| Text Description: | Qocp - older caldera wall rocks (Pleistocene). Plug. Massive intrusive exposed on Akutan Peak in wall of present caldera. Rock, collected from talus at foot of peak, is a medium gray, porphyritic basalt (51.1% SiO2, loc. 8, table 1) containing phenocrysts of plagioclase (15-30%, 4 mm), clinopyroxene (1-6%, 2 mm), and olivine (1-5%, 1 mm) in a cryptocrystalline groundmass. |
| Sample Location: |
