Sample: 91CND16
Sample ID: | 91CND16 [1] |
Station ID: | 91CND16 |
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: | Another sample of same lava flow as 91CND15. Porphyritic olivine andesite containing ~20% phenocrysts of olivine (15%, up to 1.0 x 0.5 mm), plagioclase (3%, 0.7 x 0.3 mm), and pyroxene (2%, 0.4 x 0.2mm) 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: |