Sample: 91CND13b
| Sample ID: | 91CND13b [1] |
| Station ID: | 91CND13b |
| AT Num: | |
| Volcano: | Douglas |
| Possible source: | |
| Eruption: | |
| Collector: | Nye, C. J. |
| Date sampled: | 1991-01-01 |
| Sample type 1: | Lava |
| Color: | |
| Final unit: | |
| Text Description: | Amphibole andesite sill. One of 4 to 5 sills intruding black silty shale exposed along the shore of Sukoi Bay, 15 km east of Douglas. Buff-weathering with gray-green interior, locally extensively weathered. Amphibole andesite containing ~ 15% brown, opacite-rimmed amphibole up to 4 x 1 cm (typically 1 x 0.2 cm); 35 % altered plagioclase phenocrysts, and patchy chloritic pseudomorphs after pyroxene in a microcrystalline matrix. |
| Sample Location: |
