Sample: 74ALe-57
| Sample ID: | 74ALe-57 [1] |
| Station ID: | 74ALe-57 |
| AT Num: | |
| Volcano: | Drum |
| Possible source: | |
| Eruption: | |
| Collector: | Unknown, Unknown |
| Date sampled: | 1974-00-00 |
| Sample type 1: | Lava |
| Color: | |
| Final unit: | |
| Text Description: | Dacite Dikes. Generally associated with rhyolite and rhyodacite domes (Qrd, Qrdd) of first cycle of activity, but some (secs. 14 and 15, T. 3 N., R. 4 E.) may be younger and related to Snider Peak activity. All dikes sampled are medium to dark gray and sparsely porphyritic with small phenocrysts of plagioclase, hornblende, and locally rare biotite and hypersthene in a dense pilotaxitic to trachytic or dark cryptocrystalline groundmass. |
| Sample Location: |
