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Titanite crystals in a titanite ore from khibina alkaline complex, Kola, Russia. PPL (plane polarized light), 2x (FOV = 7 mm). #alexstrekeisen #titanite #khibina #russia pic.twitter.com/XZ0EQUwBYb

— Alexstrekeisen (@alexstrekeisen) July 15, 2020

via Twitter https://twitter.com/alexstrekeisen

July 15, 2020 at 06:57PM