Sample: 91CND03
| Sample ID: | 91CND03 [1] |
| Station ID: | 91CND03 |
| 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: | Sample from outcrop surrounded by snow @4360 ft elevation in divide between Douglas and Fourpeaked. Porphyritic two-pyroxene andesite. ~50% phenocrysts of plagioclase (up to 1.3 x 0.8 mm), pyroxene (up to 1.3 x 0.3 mm), and opaque Fe-Ti oxides in a matrix of devitrified glass and subordinate microphenocrysts and microlites. Pl:px ~ 3:2 |
| Sample Location: |
