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IMAGE 178541
AVO Image

Euhedral plagioclase phenocryst from a Pleistocene lava collected on Shishaldin in 2018 in cross-polarized (XPL) and plain-polarized light (PPL). In cross polarized light distinctive crystal twinning is clearly visible, as well as a zoned rim due to changing extinction angles at different An contents.

Date: October 13, 2021 12:00 AM
Volcano(es):Shishaldin
Photographer/Creator: Loewen, Matt
URL:http://www.avo.alaska.edu/images/image.php?id=178541

Citation Information:
Image courtesy of AVO/USGS.
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Page modified: December 23, 2019 16:01
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