R642 Sample ID R642 • Cabinet A Granite Gneiss 13.33cm W x 15.49cm H x 4.979cm D • 1126g Sample TypeRockRock QualityMetamorphicTextureFoliated Grain SizeFineColorMixed light and darkGrain Sorting mohs 7 it is somewhat of a triangle shape with alternating bands of light and dark minerals and varying grain size from fine to medium/coarse Description of Mohs scale here