Biaxial Negative Indicatrix Movie

David Hirsch, Western Washington University

This is a movie showing slices through crystals in different crystallographic orientations, and the corresponding indicatrix and interference colors. This is a big file and takes awhile to download. Make sure you have a current version of QuickTime to view it. The frame rate is fairly high so you might need to pause the movie and step through with the cursor keys during teaching.

This resource is referenced here:
Subject: Geoscience:Geology, Geology:Mineralogy:Optical Mineralogy, Geoscience:Geology:Igneous and Metamorphic Petrology, Mineralogy
Resource Type: Audio/Visual:Animations/Video, Images/Illustrations
Theme: Teach the Earth:Course Topics:Petrology, Mineralogy