Siderite

n.	1.	(Min.) 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.
	2.	(Bot.) Any plant of the genus Sideritis; ironwort.

Noun	1.	siderite - iron ore in the form of ferrous carbonate Synonyms: chalybite
	2.	siderite - a meteorite consisting principally of nickel and iron

chalybite, iron ore