Definition that contains hematite
- emery a hard grey-black mineral consisting of corundum and either hematite or magnetite; used as an abrasive (especially as a coating on paper)
- taconite a variety of chert containing magnetite and hematite; mined as a low-grade iron ore
- limonite a widely occurring iron oxide ore; a mixture of goethite and hematite and lepidocrocite