Sample: 91CND06
Sample ID: | 91CND06 [1] |
Station ID: | 91CND06 |
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: | West side of Spotted Glacier at 3620 ft elevation. Sample from top of cliff several hundred feet tall. Surface has been glaciated. Porphyritic two-pyroxene andesite. ~40% phenocrysts of plagioclase (up to 1.4 x 0.5 mm), pyroxene (0.8 x 0.3 mm), and opaque Fe-Ti oxides in a matrix of devitrified glass and subordinate microphenocrysts and microlites. Pl:px ~ 3:2 |
Sample Location: |