R738 Sample ID R738 • Cabinet C Breccia 10.322cm W x 18cm H x 10.262cm D • 3278g Sample TypeRockRock QualitySedimentaryRock TypeClastic CompositionRock fragmentsGrain SizeCoarseGrain ShapeAngular Grain SortingPoorly sortedAcid ReactionOnly cement fizzesMohs Hardness 5 It is a concrete core that was man made. It is cylinder shaped. The cement is lightly colored, and contains calcium in it. And dark colored angular rock fragments throughout the rock. Description of Mohs scale here