'Siderite' definitions:

Definition of 'siderite'

From: WordNet
noun
Iron ore in the form of ferrous carbonate [syn: siderite, chalybite]
noun
A meteorite consisting principally of nickel and iron

Definition of 'Siderite'

From: GCIDE
  • Siderite \Sid"er*ite\, n. [L. sideritis loadstone, Gr. ????, ????, of iron, from ???? iron.]
  • 1. (Min.) (a) 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}. (b) A meteorite consisting solely of metallic iron. (c) An indigo-blue variety of quartz. (d) Formerly, magnetic iron ore, or loadstone. [1913 Webster]
  • 2. (Bot.) Any plant of the genus Sideritis; ironwort. [1913 Webster] Siderographic