Through the Looking Glass

The past month has been focused on looking at my returned thin sections under the petrographic microscope. This microscope was developed for use in optical mineralogy and is integral in identifying microstructures and the mineralogy of rock samples. There are two primary views with the petrographic microscope: plane polarized light and cross-polarized light. Plane polarized light (PPL) is when the light shining through the microscope is polarized, meaning it vibrates in a single plane. A PPL image would look something like this:

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