manganite

English Thesaurus

1. a black mineral consisting of basic manganese oxide; a source of manganese (noun.substance)

hypernym	:	mineral,
definition	:	solid homogeneous inorganic substances occurring in nature having a definite chemical composition (noun.substance)

substance holonym	:	atomic number 25, manganese, mn,
definition	:	a hard brittle grey polyvalent metallic element that resembles iron but is not magnetic; used in making steel; occurs in many minerals (noun.substance)