R769 Sample ID R769 • Cabinet A Schist 15.368cm W x 17.4cm H x 0.805cm D • 442g Sample TypeRockRock QualityMetamorphicTextureFoliated Grain SizeMediumColorMixed light and darkGrain Sorting mohs 3 The rock is a thin almost completely round slab with bits of garnet and hornblende in it. The rock is a silvery grey color. Description of Mohs scale here