Staurolite crystal (yellow) enclosed in a garnet. In addition to staurolite, the garnet is rich in other inclusions such as quartz (colorless) and magnetite (black). Staurolite-schist from Posada Asinara shear zone, Sardinia, Italy. PPL, 10x(Fov 2 mm) https://t.co/VtMM6XGZY7
— Alexstrekeisen (@alexstrekeisen) Oct 21, 2021
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October 21, 2021 at 07:38PM
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