Humite (yellow at PPL and with high Interference colors at XPL), spinel (green at PPL and isotropic at XPL), muscovite and calcite crystals in a Calc-silicate marble from corenno, Como, Italy. PPL and XPL Image. 2x (Fov 7 mm) #thinsection #alexstrekeisen #marble https://t.co/sFeNT94leP
— Alexstrekeisen (@alexstrekeisen) Oct 16, 2021
via Twitter https://twitter.com/alexstrekeisen
October 16, 2021 at 08:34PM
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