Caption: Silica (glass) ash particles formed from a volcanic eruption. On March 24, 2008, at Volcanoes National Park (Big Island, Hawai'i), an explosive ash-laden eruption occurred at Halema'uma'u crater (inside Kilauea crater). The eruption was primarily gas, steam, and ash. A 100 foot diameter vent created in an explosive eruption on March 19, 2008 now actively releases gas, steam and ash within the park. Shown in this image is a larger ash particle composed of many tiny pieces of pulverized rock / ash from this eruption. Volcanic ash can be carried for many miles by wind blowing across the crater area. The lava from Hawaii's active volcano contains over 60% silica (glass).
Magnification*: x40
Type: SEM
Copyright 2008 Dennis Kunkel Microscopy, Inc.
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