15 September 2011
Two pleochroism animated GIFs
Posted by Callan Bentley
Biotite in granite:
Riebeckite:
Fast and slow versions of each. Wanted to post these ASAP, so someone can use them for the Geology Word of the Week…
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Two pleochroism animated GIFs
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AGU Blogosphere | Georneys | Geology Word of the Week: P is for Pleochroism
on 15 September 2011
Callan Bentley is Associate Professor of Geology at Piedmont Virginia Community College in Charlottesville, Virginia. He is a Fellow of the Geological Society of America. For his work on this blog, the National Association of Geoscience Teachers recognized him with the James Shea Award. He has also won the Outstanding Faculty Award from the State Council on Higher Education in Virginia, and the Biggs Award for Excellence in Geoscience Teaching from the Geoscience Education Division of the Geological Society of America. In previous years, Callan served as a contributing editor at EARTH magazine, President of the Geological Society of Washington and President the Geo2YC division of NAGT.
[…] Bentley of Mountain Beltway has also put together a wonderful set of .gif files which illustrate pleochroism in biotite and riebeckite. Be sure to head over there to check them […]
Great post! I can’t wait to show these to my students in the sed pet lab later this semester!