Andalusite crystal, biotite and quartz in a Andalusite-schist from Valmalenco, Italy. PPL, XPL and XPL + lambda plate. 10x (Fov 2 mm). #alexstrekeisen #andalusite #biotite #valmalenco #italy https://t.co/lOEdwxLQeg
— Alexstrekeisen (@alexstrekeisen) Sep 24, 2021
via Twitter https://twitter.com/alexstrekeisen
September 25, 2021 at 12:05AM
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