Sample: 91CND15
| Sample ID: | 91CND15 [1] |
| Station ID: | 91CND15 |
| 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: | Very fresh, highly fractured andesite outcrop at 2300 ft elevation between Spotted and striped glaciers. Appears to be very young. Porphyritic olivine andesite containing ~25% phenocrysts of olivine (20%, up to 1.2 x 0.6 mm), pyroxene (3%, 0.6 x 0.3 mm), and plagioclase (2%, 0.6 x 0.2 mm) in a matrix dominated by interlocking plagioclase microlites (200 x 15 microns) and pyroxene (20 microns). Olivine phenocrysts contain euhedral translucent brown chromite octahedral. |
| Sample Location: |
