ˌkȯrəˈnäˌdīt noun
( -s )
Etymology: Francisco Vásquez Coronado died 1554 Spanish explorer + English -ite; from its occurrence in the Coronado vein, Greenlee county, southeast Arizona
: a lead and manganese oxide MnPbMn 6 O 14 that is an important constituent of manganese ore, occurs in black massive form with fibrous structure and is isostructural with hollandite