siderite

1. Iron ore in the form of ferrous carbonate (synset 115064394)
   is a type of: iron ore - an ore from which iron can be extracted
   same as: chalybite
2. A meteorite consisting principally of nickel and iron (synset 109457141)
   is a type of: meteorite - stony or metallic object that is the remains of a meteoroid that has reached the earth's surface

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