Sample: 96-ARh-59D
| Sample ID: | 96-ARh-59D [1] [2] |
| Station ID: | 96-ARh-59 |
| AT Num: | |
| Volcano: | Akutan |
| Possible source: | |
| Eruption: | |
| Collector: | Richter, D. H. |
| Date sampled: | 1996-00-00 |
| Sample type 1: | Lava |
| Color: | |
| Final unit: | lbc |
| Text Description: | Qocd - older caldera wall rocks (Pleistocene). Dome. Small dome or thick flow of banded, mixed magma, of porphyritic high-silica andesite. Dark bands (59.2% SiO2, loc. 9, table 1) are medium dark gray and consist of phenocrysts of plagioclase (5-10%, 2 mm), clinopyroxene (1-3%, 1.5 mm), and orthopyroxene (trace -1%, <1 mm) in a cryptofelsitic groundmass. |
| Sample Location: |
