Amphibole discrimination tutorial Optical mineralogy

Orthopyroxene tutorial Optical mineralogy

Biotite tutorial Optical mineralogy

Earth Materials: Ores and reflected light microscopy

Mineral Identification : Amphiboles

Cleavage tutorial Optical mineralogy

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Optical Mineralogy Pt.1- Plane & Cross Polarized Light, Birefringence, Pleochroism, etc. | GEO GIRL

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How to Identify Igneous Rocks in Thin Section & Hand Sample | GEO GIRL

Pleochroism and color tutorial Optical mineralogy

Identifying Minerals -- Earth Rocks!

Clinopyroxene tutorial Optical mineralogy

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Structures et minéraux des roches en microscope

Symmetry Operations, Types of Twinning, & Miller Indices of Crystal Planes- Mineralogy | GEO GIRL

Feldspar - Plagioclase vs Alkali / k-feldspar Mineralogy in hand specimen & thin section

Plagioclase tutorial optical mineralogy