Dexter Perkins's University of North Dakota mineralogy resource compares polarized-light images and identification notes for quartz, feldspars, micas, pyroxenes, and many other minerals.
Original site: https://sites.und.edu/dexter.perkins/opticalmin/index.htm
Full Switchboard article: https://switchboardtechservices.com/articles/ancient-web-optical-mineralogy-taught-rock-identification-in-paired-microscope-images/
#ancientweb #opticalmineralogy #rock #paired #images
Original site: https://sites.und.edu/dexter.perkins/opticalmin/index.htm
Full Switchboard article: https://switchboardtechservices.com/articles/ancient-web-optical-mineralogy-taught-rock-identification-in-paired-microscope-images/
#ancientweb #opticalmineralogy #rock #paired #images
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Categories: Ancient Web & Internet History [c23]