Guide to Thin Section Microscopy (2nd ed., 2012) by M.M. Raith, P. Raase, J. Reinhardt

https://www.minsocam.org/msa/openaccess_publications/

or from

https://www.dmg-home.org/service/publikationen/downloads/

 

Handbook of Mineralogy by J.W. Anthony, R.A. Bideaux, K.W. Bladh, M.C. Nichols (eds.)

https://handbookofmineralogy.org

 

Olaf Medenbach's website on mineral optics

(includes excellent presentations on conoscopic interference figures, including dispersion and various anomalies)

https://homepage.rub.de/olaf.medenbach/eng.html

 

Frank Mazdab's rockPTX mineralogy-petrology website

https://www.rockptx.com

 

Virtual Microscope site, Open University, U.K.

https://www.virtualmicroscope.org

 

Virtual Petrography (ViP) - A virtual microscope for the geosciences, RWTH Aachen

https://publications.rwth-aachen.de/record/675017