solid as a rock another fine limestone product ilc resources feed grade calcium carbonate the industry source what is geological history of an ordinary kind sedimentary principally composed or combinations and magnesium this was formed millions years ago primarily shells skeletons plants animals marine origin fossiliferous carbon ate bearing material gradually broken down by abrasive action sea agitation into sand like fragments they were then accumulated through deposition layer on to form in some instances massive beds large variety sources are available for application however most common supplemental table 1 two fundamental types high calcitic dolomitic association american control officials aafco classifies categories one car bonate true name which contains minimum 38 ca other
