R672

Sample ID R672 • Cabinet C

Chalk

9.195cm W x 13.872cm H x 5.85cm D • 594g
Sample TypeRockRock QualitySedimentaryRock TypeOrganic
CompositionCalaciteGrain SizeFineGrain ShapeRounded
Grain SortingN/AAcid ReactionYesMohs Hardness 1

It is shaped like a medium sized rounded pebble. It has a hole in the shape. It is white and powders very easily, leaving white powder