Noun
a variety of chert containing magnetite and hematite; mined as a low-grade iron ore
Source: WordNetD. Taconite ore pellets can be transported by rail. Source: Internet
Scott Walker, a Republican, signed a contentious bill in 2013 that loosened restrictions on iron mining in hopes of clearing the way for a massive Gogebic Taconite iron mine along the shores of Lake Superior. Source: Internet