DescriptionRedoubt Andesite.jpg A chunk of Andesite thrown by the eruption of Mount Redoubt in 2009 and contributed by the U.S. Geological Survey is on...
English Photomicrograph of sample 09RDWES301 - an andesite collected during the Redoubt, AK 2009 eruption. applies to jurisdiction: United States of America...
of pulverized porphyritic andesite. This sample is from a distal airfall ash deposit. Locality of source volcano: Mt. Redoubt, far-northeastern Aleutian...
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