of a rock or mineral Containing iron and magnesium as major components
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AnswerCrossword Clue
ferromagnesian(of a rock or mineral) Containing iron and magnesium as major components
pyroxenesAny of a large class of rock-forming silicate minerals, generally containing calcium, magnesium, and iron and typically occurring as prismatic crystals
andraditeA mineral of the garnet group, containing calcium and iron. It occurs as yellow, green, brown, or black crystals, sometimes of gem quality
taconitelow-grade iron ore, containing about 27 percent iron and 51 percent silica, found as a hard rock formation in the Lake Superior region
taconiteslow-grade iron ore, containing about 27 percent iron and 51 percent silica, found as a hard rock formation in the Lake Superior region
ferromagnesiancontaining iron and magnesium, as applied to the mafic minerals, eg olivine