əˈragəˌnīt, ˈarəgəˌnīt noun
( -s )
Etymology: German aragonit, from Aragon, its locality + German -it -ite
: a mineral consisting like calcite of calcium carbonate CaCO 3 but differing from calcite especially in its orthorhombic crystallization, greater density, and less distinct cleavage and occurring most commonly in beds of gypsum and of iron ore (hardness 3.5-4, specific gravity 2.93-2.95)