Sample: 73-Arh-23AD
| Sample ID: | 73-Arh-23AD [1] |
| Station ID: | 73-Arh-23 |
| AT Num: | |
| Volcano: | Drum |
| Possible source: | |
| Eruption: | |
| Collector: | Richter, D. H. |
| Date sampled: | 1973-01-01 |
| Sample type 1: | Lava |
| Color: | |
| Final unit: | |
| Text Description: | Rhyodacite dome of Snider Peak - remnant core of rhyodacite dome representing one of the latest stages of eruptive history of Mount Drum Volcano. Rocks of dome are light gray to light buff gray, have a sugary texture, and are locally vesicular. They contain sparse small (2 mm) phenocrysts of plagioclase, strongly oxidized hornblende, and rare hypersthene and augite in a vapor-phase crystallized groundmass of feldspars and minor hypersthene. Chemistry: sample 17 (73-ARh-23) |
| Sample Location: |