haematite

English Thesaurus

1. the principal form of iron ore; consists of ferric oxide in crystalline form; occurs in a red earthy form (noun.substance)

hypernym	:	iron ore,
definition	:	an ore from which iron can be extracted (noun.substance)

substance meronym	:	emery,
definition	:	a hard grey-black mineral consisting of corundum and either hematite or magnetite; used as an abrasive (especially as a coating on paper) (noun.substance)