Carbonate of iron, an important ore of iron occuring generally in cleavable masses, but also in rhombohedral crystals. It is of a light yellowish brown color. Called also sparry iron, spathic iron.
A meteorite consisting solely of metallic iron.
An indigo-blue variety of quartz.
Formerly, magnetic iron ore, or loadstone.
Any plant of the genus Sideritis; ironwort.
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