R771 Sample ID R771 • Cabinet A Schist 10.261cm W x 24.5cm H x 7.963cm D • 4484g Sample TypeRockRock QualityMetamorphicTextureFoliated Grain SizeMediumColorDarkGrain Sorting mohs 3 The rock is dark grey with bits of pyrite in it on one of the sides of the rock. The rocks is shaped like a long rectangle. Description of Mohs scale here