Mohs scale
Related Words
mineralhardnessgeologydiamondtalcgypsumcalcitefluoriteapatiteorthoclasequartztopazcorundumscratchabrasioncrystalcrystallographymineralogygemstonegemologyrocksedimentigneousmetamorphicindexmeasurementratinggradelevelcomparisontestresistancedurabilitybrittlenesscleavagefracturelusterstreakdensityspecific gravitycompositionelementoxidesilicatecarbonatesulfidehalidemagnifying glasspetrologylithologystratigraphyoreveinmatrixinclusionpolishinggrindingabrasivefrictionsurfacetexturegrainlatticebondvalencechemistryphysics