Siderite

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.

a meteorite consisting principally of nickel and iron

iron ore in the form of ferrous carbonate