Sample: 52-Fs-94
| Sample ID: | 52-Fs-94 [1] |
| Station ID: | 52-Fs-94 |
| AT Num: | |
| Volcano: | Tanaga |
| Possible source: | |
| Eruption: | |
| Collector: | Fraser, G. D. |
| Date sampled: | 1952-01-01 |
| Sample type 1: | Lava |
| Color: | |
| Final unit: | |
| Text Description: | Andesite basalt, flow or sill, S. Tanaga. Specimen 52-Fs-94 (Rittmann: andesine basalt) is a black, very fine grained rock. About 1 percent consists of scattered phenocrysts of plagioclase, clinopyroxene, and pseudomorphs after olivine. The groundmass has a strong flow structure and consists of microlites of calcic andesine, clinopyroxene, and opaque oxides. |
| Sample Location: |
References Cited
[1] Geology of the Delarof and westernmost Andreanof Islands, Aleutian Islands, Alaska, 1959
Fraser, G. D., and Barnett, H. F., 1959, Geology of the Delarof and westernmost Andreanof Islands, Aleutian Islands, Alaska: in Investigations of Alaskan volcanoes, U.S. Geological Survey Bulletin 1028-I, p. 211-248, 4 sheets, scale 3 at 1:25,000, and 1 at 1:250,000.
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