Sample: 47AC80
| Sample ID: | 47AC80 [1] [2] |
| Station ID: | 47AC80 |
| AT Num: | |
| Volcano: | Sugarloaf Peak |
| Possible source: | |
| Eruption: | |
| Collector: | Unknown, Unknown |
| Date sampled: | 1947-01-01 |
| Sample type 1: | Lava |
| Color: | |
| Final unit: | Sugarloaf Head |
| Text Description: | Specimen 47AC80 (137,150' E., 271,850' N.) is from a compact block on the rim of the crater of the westernmost part of the small parasitic cone of Sugarloaf. It also is an olivine basalt, with plagioclase averaging An64, olivine (Fa30) as much as 0.3 mm in diameter, augite less than 0.5 mm and green in hand specimen, and magnetite. The groundmass has an intergranular texture, with prisms of clinopyroxene and microlites of plagioclase (0.02 mm in diameter). |
| 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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