Sample: 47AC98
| Sample ID: | 47AC98 [1] [2] |
| Station ID: | 47AC98 |
| AT Num: | |
| Volcano: | Semisopochnoi |
| Possible source: | |
| Eruption: | |
| Collector: | Unknown, Unknown |
| Date sampled: | 1947-01-01 |
| Sample type 1: | Lava |
| Color: | |
| Final unit: | Pochnoi volcanics |
| Text Description: | Specimen 47AC98 is a medium-brownish-gray (5R 5/1) dense lava, with planar vesicles, from a flow 4 feet thick on the flank of the denuded cone just south of Fenner Creek and north of Sugarloaf (141,45O'E., 280,500' N.). The texture is seriate, and intersertal. The constituents are plagioclase (0.01 to 1 mm in diameter) averaging about An77, augite (0.01 to 0.2 mm in diameter), olivine (Fa30, determined from 2V), and magnetite, with intersertal glass. |
| Sample Location: |
References Cited
[1] Geologic reconnaissance of Semisopochnoi Island, western Aleutian Islands, Alaska, 1959
Coats, R. R., 1959, Geologic reconnaissance of Semisopochnoi Island, western Aleutian Islands, Alaska: in Investigations of Alaskan volcanoes, U.S. Geological Survey Bulletin 1028-O, p. 477-519, 1 sheet, scale 1:25,000.
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