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Amphibole reaction rim: not only beautiful but useful for quantifying magma ascent rates or magmatic heating #MinCup #ThinSectionThursday http://pic.twitter.com/kvxDAifgIq

— Katie Preece (@KatieJPreece) September 21, 2017

via Twitter https://twitter.com/KatieJPreece

September 21, 2017 at 04:39PM