Large zircon crystals (high relief and brown at PPL and with high Interference colors at XPL), quartz (with grey interference colors at XPL) and feldspar (left part of the photo, with grey interference colors at XPL). Pegmatite from Saudi Arabia. PPL and XPL Image, 2x (Fov 7 mm) https://t.co/EGsyh5InFf
— Alexstrekeisen (@alexstrekeisen) Jul 27, 2021
via Twitter https://twitter.com/alexstrekeisen
July 27, 2021 at 09:03PM
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