Sample: 91CND33
| Sample ID: | 91CND33 [1] |
| Station ID: | 91CND33 |
| 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 small valley-filling lava flow exposed at the confluence of two small ice streams at about 2000 ft elevation and 3.5 km above the terminus of a small glacier. This flow is about 5 km directly southeast and downslope from Douglas summit. Porphyritic two-pyroxene andesite. Phenocrysts of plagioclase (30%, up to 1.0 x 0.3 mm), pyroxene (20%, typically 0.5 x 0.2 mm), and opaque Fe-Ti oxides in a matrix of microphenocrysts and microlites and interstitial glass. |
| Sample Location: |
