Backscatter electron polished mount image of an Edgecumbe rhyolite pumice (sample 82ARJ136). Image acquired on an JEOL 6510LV SEM at 20 kV, 12 mm working distance, spot size of 65, and in BEC imaging mode.
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.