Sample: 91CND27
| Sample ID: | 91CND27 [1] |
| Station ID: | 91CND27 |
| 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 ridge-crest outcrop at 3320 ft elevation 9 km east southeast of Douglas summit. Non-volcanic country-rock underlies Douglas lavas below this sample. Porphyritic two-pyroxene andesite. Phenocrysts of plagioclase (35%, up to 1.3 x 0.7 mm), and pyroxene (15%, up to 0.4 x 0.2 mm) in a groundmass of devitrified glass and subordinate microphenocrysts and microlites. |
| Sample Location: |
