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Optical Mineralogy Part 1 - Plane and Cross Polarized Light, Birefringence, Pleochroism

GEO GIRL via YouTube

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Overview

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This introductory course explains how light interacts with minerals in thin section and how to use plane- and cross-polarized light to identify them. It covers refractive index, relief and Becke lines, birefringence, interference colors, extinction angles, and pleochroism.

Syllabus

light traveling through minerals
refractive index R.I.
plane & cross polarized light
isotropic vs. anisotropic minerals
birefringence & interference colors
orders of interference colors
accessory plates
extinction
extinction angles
length fast vs. length slow minerals
pleochroism
mineral identification chart
upcoming videos!

Taught by

GEO GIRL

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