of calcite caco3 from the mohs scale of mineral hardness on the background from connected molecules

acid anion aragonite atomic atoms background caco3 calcit calcite carbonate carbonated carbonation chemistry connected creative crystal cube diamond dolomite formula gem geometry glass graphic hard hardness hexagon icon illustration ion isolated jewelry limestone line mineral modern mohs molecular molecule molecules polymorph potash rock salt scale shapes sign stone structure symbol talc template vaterite vector web white