Sample: 94SJP47
Sample ID: | 94SJP47 [1] |
Station ID: | 94SJP47 |
AT Num: | |
Volcano: | Skookum Creek |
Possible source: | |
Eruption: | |
Collector: | Preece, S. J. |
Date sampled: | 1994-00-00 |
Sample type 1: | Lava |
Color: | |
Final unit: | |
Text Description: | Feeder dike for Dome C cutting up through silicic material from Dome A at Site 3. Fine grained, holocrystalline, trachytic, porphyritic to seriate porphyritic with a matrix of cryptocrystalline material, opaque, feldspar and biotite?. Plagioclase phenocrysts (An32 - An61) are up to 2.4 mm; the larger grains may have oscillatory zoning. Opaque phenocrysts are up to 0.25 mm. |
Sample Location: |