Sample: 91CND19
| Sample ID: | 91CND19 [1] |
| Station ID: | 91CND19 |
| 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 same flow lobe as 91CND08. Upper part of this flow is a few to several feet higher than adjacent Spotted Glacier, thus has been beheaded by glacial erosion. Surface of flow is glacially polished and rounded. Porphyritic andesite. About 50% phenocrysts and microphenocrysts of plagioclase (up to 0.8 x 0.4 mm) and pyroxene (0.7 x 0.3 mm) with a microlite-rich brown glassy groundmass. |
| Sample Location: |
