hematite definition

  • noun:
    • A black or blackish-red to brick-red mineral, really Fe2O3, the principle ore of iron.
    • An iron ore, primarily peroxide of iron, Fe2O3.
    • An important ore of iron, the sesquioxide, so named because of the red colorization associated with powder. It takes place in splendent rhombohedral crystals, and in massive and earthy types; -- the very last known as red ocher. Called also specular iron, oligist metal, rhombohedral iron ore, and bloodstone. See Brown hematite, under brown.
    • local anhydrous iron sesquioxid, or redoxid of metal, Fe2O3.
    • An intaglio cut-in hematite.
    • the main type of iron-ore; consist of ferric oxide in crystalline kind; does occur in a red natural kind

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