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SAMPLE INFO : 79AM40
Sample ID:79AM40
Station ID:79AM40
Latitude:57.754
Longitude:-156.39
Datum:NAD83
Date Sampled:1979-01-01
Sample Type 1:Lava
Field Lithology:Andesite
Text Description:
Porphyritic two-pyroxene vesicular andesite. Phenocrysts of plagioclase (35%), orthopyroxene (6%), and clinopyroxene (4%) in a groundmass of pale-brown glass (50%).

References:
Geology of the Ugashik-Mount Peulik volcanic center, Alaska

GEOCHEM DATA