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Noun: siderite  'si-du,rIt
  1. Iron ore in the form of ferrous carbonate
    "siderite deposits were found in the old mining region";
    - chalybite
     
  2. A meteorite consisting principally of nickel and iron
    "The museum displayed a large siderite found in the desert"

Derived forms: siderites

Type of: iron ore, meteorite

Encyclopedia: Siderite