Sample: 72-ARh-318
| Sample ID: | 72-ARh-318 [1] |
| Station ID: | 72-ARh-318 |
| AT Num: | |
| Volcano: | |
| Possible source: | |
| Eruption: | |
| Collector: | Richter, D. H. |
| Date sampled: | 1972-00-00 |
| Sample type 1: | Lava |
| Color: | |
| Final unit: | |
| Text Description: | Basalt and basaltic andesite flows. Extensive sequence of thin to medium flows with oxidized dark-red scoriaceous tops and bottoms in northwestern part of quadrangle. Rocks are gray to dark gray and contain small phenocrysts of olivine and minor hypersthene in a fine-grained intergranular to intersertal matrix of plagioclase and augite. Locally matrix is altered to chlorite and clay minerals. Source probably from volcanic center to northwest in Nabesna B-6 quadrangle. |
| Sample Location: |