ˈkrēˌdīt noun
( -s )
Etymology: Creede quadrangle (U.S. Geol. Survey), southwest Colorado, its locality + English -ite
: a mineral Ca 3 Al 2 F 4 (OH, F) 6 (SO 4 ).2H 2 O consisting of hydrous calcium aluminum fluoride with calcium sulfate, occurring in white to colorless grains, and radiating crystalline masses (hardness 2, specific gravity 2.7)