R641 Sample ID R641 • Cabinet A Gneiss 3.992cm W x 7.861cm H x 1.127cm D • 84g Sample TypeRockRock QualityMetamorphicTextureFoliated Grain SizeFineColorMixed light and darkGrain Sorting mohs 6 The sample is rectangular in shape. It has alternating bands of light and dark minerals. The light bands are pinkish and the dark bands are light grey to dark grey in color. Description of Mohs scale here