R747 Sample ID R747 • Cabinet C Conglomerate 7.572cm W x 10.861cm H x 5.798cm D • 460g Sample TypeRockRock QualitySedimentaryRock TypeClastic CompositionRock fragmentsGrain SizeCoarseGrain ShapeRounded Grain SortingPoorly sortedAcid ReactionNoMohs Hardness 4 It is a clump of rocks of various sizes cemented together. There is some evidence of some rusting having occurred. There are some quartz rocks. Description of Mohs scale here