Sample: 50
| Sample ID: | 50 [1] |
| Station ID: | 50 |
| AT Num: | |
| Volcano: | Yantarni |
| Possible source: | |
| Eruption: | |
| Collector: | Unknown, Unknown |
| Date sampled: | |
| Sample type 1: | Lava |
| Color: | |
| Final unit: | |
| Text Description: | Texture: Porphyry; groundmass <0.1 mm, massive plagioclase >> chlorite = mica; quartz as anhedral mosaics (xenolithics); apatite microphenocrysts. Alteration: Plagioclase altered to chlorite/mica, hornblende to chlorite/hematite; veinlets of hematite/calcite/mica |
| Sample Location: |
References Cited
[1] Petrography, chemistry, and geologic history of Yantarni volcano, Aleutian volcanic arc, Alaska, 1987
Riehle, J. R., Yount, M. E., and Miller, T. P., 1987, Petrography, chemistry, and geologic history of Yantarni volcano, Aleutian volcanic arc, Alaska: U.S. Geological Survey Bulletin 1761, 27 p., 1 sheet, scale 1:63,360.
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