35mm Format Film - Polarized Light Micrograph
Crystals of silica (quartz), pumice and mixed feldspar minerals on a glass slide, between partially crossed polars.
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Volcanic Ash Particles - From Mt. Saint Helens, 1980 35mm Format Film - Polarized Light Micrograph Crystals of silica (quartz), pumice and mixed feldspar minerals on a glass slide, between partially crossed polars. |