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About: Amorphous calcium carbonate     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:Whole105869584, within Data Space : dbpedia.org associated with source document(s)

Type: mineralyago:WikicatCalciumCompoundsyago:Abstraction100002137yago:Cognition100023271yago:Compound105870180yago:Concept105835747yago:Content105809192yago:Idea105833840yago:PsychologicalFeature100023100yago:Whole105869584 New Facet based on Instances of this Class

Amorphous calcium carbonate (ACC) is the amorphous and least stable polymorph of calcium carbonate. ACC is extremely unstable under normal conditions and is found naturally in taxa as wide-ranging as sea urchins, corals, mollusks, and foraminifera. It is usually found as a monohydrate, holding the chemical formula CaCO3·H2O; however, it can also exist in a dehydrated state, CaCO3. ACC has been known to science for over 100 years when a non-diffraction pattern of calcium carbonate was discovered by Sturcke Herman, exhibiting its poorly-ordered nature.