Photomicrograph of brown, bubble-bearing melt inclusion (~118 x 85 µm) from Mount Edgecumbe scoria sample 81ARj73A. Crystal picked from 250-500 µm size fraction.
Credit: Image courtesy of AVO/USGS.
Use Restriction: Please cite the photographer and the Alaska Volcano Observatory / U.S. Geological Survey when using this image. Full Resolution.