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  • Piece of Northamptonshire ironstone, from Irchester Country Park. © NMAG

    Ironstone

    Northamptonshire’s ironstone was formed from iron-rich sediments in the Jurassic period. Quarried since Roman times, ironstone has shaped our landscape, fuelled the county's industry and built our houses.

    175 million years ago Geologic to Prehistoric

  • Piece of dressed Northamptonshire sandstone © NMAG

    Dressed Northamptonshire Sandstone

    A small piece of sandstone quarried and dressed for use in the modern repairs to the 16th century Manor House in Great Doddington.

    1999 Modern