This is composed of 49 images taken with a SEM. This sample was given to us to image by Ronald Schott, a Professor of Geology and avid gigapanner.
This is a fragment of basaltic glass formed when
flowing lava chilled against my rock hammer on the
evening of January 7, 2004. You can see some
photos of my encounter with the lava at: www.flickr.com/photos/rschott/sets
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