ˈkȯ(r)dēəˌrīt noun
( -s )
Etymology: French, from Pierre L. A. Cordier died 1861 French geologist, who first described it + French -ite
: an orthorhombic mineral of various shades of blue with vitreous luster and strong dichroism consisting of a silicate of aluminum, iron, and magnesium (Mg,Fe) 2 Al 4 Si 5 O 18 easily altered by exposure (hardness 7-7.5, specific gravity 2.60-2.66)