Staurolite crystal (Gold yellow at PPL), ilmenite (balck), tourmaline (green at PPL), musvovite and quartz in a sialic amphibolite from Posada Asinara shear zone, Sardinia (Italy). PPL and XPL image, 10x (Field of view = 2mm)#alexstrekeisen #staurolite #thinsection #sardinia pic.twitter.com/eCIamkY5g1
— Alexstrekeisen (@alexstrekeisen) April 26, 2021
via Twitter https://twitter.com/alexstrekeisen
April 26, 2021 at 07:35PM
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