R752 Sample ID R752 • Cabinet C Arkose Sandstone 9.807cm W x 24.5cm H x 8.75cm D • 3638g Sample TypeRockRock QualitySedimentaryRock TypeClastic CompositionClaysGrain SizeMediumGrain ShapeRounded Grain SortingWell sortedAcid ReactionNoMohs Hardness 3 It is a long rectangular rock that has evidence of stratification or layering going on. Brown in color with some slight variation in the shade. Description of Mohs scale here