Rectangular melilite phenocrysts (brown at PPL and with blue interference colors at XPL) set in a fine-grained leucite-augite-rich groundmass (leucite have Anhedral habit and Is isotropic at XPL). Melilitite vulture volcano, Italy. PPL and image, 10x (Field of view 2 mm) https://t.co/CUwLcHotNc
— Alexstrekeisen (@alexstrekeisen) Dec 5, 2021
via Twitter https://twitter.com/alexstrekeisen
December 06, 2021 at 12:49AM
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