Sillimanite-Garnet Schist
Credit Line: Mineralogical and Geological Museum at Harvard University
Object number: BILLINGS-MW94
DescriptionHigh grade metamorphic rock containing mica (≤ 4 mm), sillimanite (≤ 16 mm), and garnet (≤ 2.5 mm). Specimen is very weathered causing significant discoloration.