Too early for #ThinSectionThursday, but before kyanite gets knocked out the #MinCup2018, here's a nice kyanite, with green tourmaline crystals in biotite, from weird Moine assemblage at Port Bheathain, Mull. FOV 2mm wide. pic.twitter.com/cqckQkhIQn
— John Faithfull (@FaithfullJohn) September 26, 2018
via Twitter https://twitter.com/FaithfullJohn
September 26, 2018 at 10:25PM
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