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I found fayalite (iron rich olivine) and orthopyroxene in my high silica rhyolite! #ThinSectionThursday pic.twitter.com/6VNrqwnCms

— Genna Chiaro (@gennachiaro) September 6, 2018

via Twitter https://twitter.com/gennachiaro

September 06, 2018 at 06:19PM