Home
Volcanoes
Webcams
News
Explore Data
Images
Get Involved
About AVO

Sample: 79ADt 135

Sample ID: 79ADt 135 [1]
Station ID: 79ADt 135
AT Num:
Volcano: Blue Mtn
Possible source:
Eruption:
Collector: Detterman, R. L.
Date sampled: 1979-01-01
Sample type 1: Lava
Color: Bluish-white
Final unit:
Text Description: Bluish-white (5B 9/1), vesicular, glassy hornblende dacite (S; high-silica andesite G). Phenocryst phases are plagioclase (An 64) and hornblende. Hornblende has abundant included opaque oxides. Abundant glass in groundmass, commonly in frothy pockets, showing little devitrification. Dome associated with Blue Mountain volcanic center.
Sample Location:

References Cited

[1] Map and tables showing geochronology and whole-rock geochemistry of selected samples, Ugashik and part of Karluk quadrangles, Alaska, 1992

Wilson, F.H., and Shew, Nora, 1992, Map and tables showing geochronology and whole-rock geochemistry of selected samples, Ugashik and part of Karluk quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1539-E, 34 p., 2 sheets, scale 1:250,000.