Basal sections of zoned hornblende in a andesite, Pergamon (Turkey). PPL (plane polarized light), 2x (Field of view = 7mm)#alexstrekeisen #amphibole #Turkey pic.twitter.com/I97dn9hT28
— Alexstrekeisen (@alexstrekeisen) July 5, 2020
via Twitter https://twitter.com/alexstrekeisen
July 05, 2020 at 02:12PM
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