Sample: 47AC110
| Sample ID: | 47AC110 [1] [2] |
| Station ID: | 47AC110 |
| AT Num: | |
| Volcano: | Mount Young |
| Possible source: | |
| Eruption: | |
| Collector: | Unknown, Unknown |
| Date sampled: | 1947-01-01 |
| Sample type 1: | Lava |
| Color: | |
| Final unit: | Cerberus |
| Text Description: | Specimen 47AC110 (131,000' E., 282,250' N.) is from a relatively short flow, which was sampled on the southeast side of the southeast peak of Mount Cerberus. It is a dark-gray (N 3) dense vitrophyre, with a seriate texture. About 25 percent of the rock is plagioclase (1 mm in size), averaging about An45; the other phenocrysts are augite, sparse hypersthene (En65,) in slender needles, apatite as pseudodichroic prisms, and magnetite. The groundmass consists of plagioclase microlites, augite, and magnetite in pale-brown 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.
full-text PDF 1.4 MB
plate 59 PDF 2.7 MB