Siderite
noun
1.
Also called chalybite. a common mineral, iron carbonate, FeCO 3 , usually occurring in yellowish to deep-brown cleavable masses: a minor ore of iron.
2.
a meteorite consisting almost entirely of metallic minerals.
noun
1.
Also called chalybite. a pale yellow to brownish-black mineral consisting chiefly of iron carbonate in hexagonal crystalline form. It occurs mainly in ore veins and sedimentary rocks and is an important source of iron. Formula: FeCO3
2.
a meteorite consisting principally of metallic iron
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