Assertion: aragonite | /r/AtLocation | recent sediments
Facets:
value: in the shells of organisms
type: LOCATION
Source sentences:
text: The commonest varieties, calcite, dolomite, and aragonite, are prominent constituents of certain rocks: calcite is the principal mineral of limestones and marbles; dolomite occurs as a replacement for calcite in limestones, and when this is extensive the rock is termed dolomite; and aragonite occurs in some recent sediments and in the shells of organisms that have calcareous skeletons.