Assertion: aragonite | /r/CapableOf | cement in a protein matrix
Facets:
value: mainly
type: DEGREE
Source sentences:
text: Aragonite is a metastable polymorph of calcium carbonate found in mollusk’s shells, appearing in tiles and prismatic columns, cemented in a protein matrix - mainly proteins - that acts as a framework on which the aragonite is nucleated forming nacre, besides selecting the morphology of the nucleated cristaline phase.