Earth Optics Video 6: Biaxial Minerals
Channel: Earth Optics
Date: 2015-11-28

In this video, I go through examples of biaxial interference figures and show examples where I determine the optic sign and 2V angle. 

For supplemental questions and resources, please check out my webpage at www.earthopticsmineralogy.com

Michel-Levy Chart: D Flinn G Newall
2V Angle Diagram: http://www.brocku.ca/earthsciences/people/gfinn/optical/bxoafig.htm