R732 Sample ID R732 • Cabinet C Mudstone 6.195cm W x 12.465cm H x 5.382cm D • 430g Sample TypeRockRock QualitySedimentaryRock TypeClastic CompositionClaysGrain SizeVery fineGrain ShapeAngular Grain SortingWell sortedAcid ReactionNoMohs Hardness 3 Grey colored from the clay. A bit of rust red on the bottom and a little on the side of the rock. Somewhat long, one side thinner in terms of width than the other side. Description of Mohs scale here