Sample: AK-81-22

Sample ID:	AK-81-22 ^[1]
Station ID:	AK-81-22
AT Num:
Volcano:	Akutan
Possible source:
Eruption:
Collector:	Unknown, Unknown
Date sampled:	1981-01-01
Sample type 1:	Lava
Color:
Final unit:
Text Description:	Porphyritic andesite containing about 8% phenocrysts (plagioclase, orthopyroxene, and clinopyroxene). The groundmass is partially altered to chlorite and also contains some quartz veinlets.
Sample Location:

References Cited

[1] The igneous petrology and geochemistry of northern Akutan Island, Alaska, 1982

Romick, J. D., 1982, The igneous petrology and geochemistry of northern Akutan Island, Alaska: University of Alaska Fairbanks unpublished M.S. thesis, 151 p.

Alaska Volcano Observatory

Sample: AK-81-22

References Cited

[1] The igneous petrology and geochemistry of northern Akutan Island, Alaska, 1982