Sample: 71-PCL-238
| Sample ID: | 71-PCL-238 [1] |
| Station ID: | 71-PCL-238 |
| AT Num: | |
| Volcano: | |
| Possible source: | |
| Eruption: | |
| Collector: | Lowe, P. C. |
| Date sampled: | 1971-00-00 |
| Sample type 1: | Lava |
| Color: | |
| Final unit: | |
| Text Description: | Wrangell Lava. Rhyodacite dikes. Medium grained, locally porphyritic rocks with phenocrysts of hornblende, hypersthene, and plagioclase. Dikes range from 1 to 20 m in width and often occur in subparallel sets. Apparently associated with rhyodacite domes (unit QTr). Locally fissile, parallel to dip; or, show columnar jointing, perpendicular to dip. Host andesites (QTau) locally contain sulfide minerals, chiefly pyrite, near contact |
| Sample Location: |