R645 Sample ID R645 • Cabinet A Quartzite 15.249cm W x 15.488cm H x 6.206cm D • 3144g Sample TypeRockRock QualityMetamorphicTextureNon-foliated Grain SizeFineColorDarkGrain Sorting mohs 7 It is somewhat of a square shape. It's color is brown with some layers of a reddish-brown in places. There are some lines created in the rock from cleavage and/or weathering. There is a slight sheen in some places depending on how the light is on the rock. Description of Mohs scale here