White to tan, poorly vesicular 1986 lithic sample. Contains stretched glass and is crystal-rich.
Petrology and geochemistry of the 2006 eruption of Augustine Volcano
This website is supported by the U.S. Geological Survey under Cooperative Agreement Grant G19AC00060 and G19AC00171.
Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.