chert

English Thesaurus

1. variety of silica containing microcrystalline quartz (noun.substance)

hypernym	:	silica, silicon dioxide, silicon oxide,
definition	:	a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite (noun.substance)

hyponym	:	taconite,
definition	:	a variety of chert containing magnetite and hematite; mined as a low-grade iron ore (noun.substance)

derivation	:	cherty,
definition	:	resembling or containing chert (adj.pert)

derivation	:	cherty,
definition	:	resembling or containing chert (adj.pert)