malm

/mɑlm/
noun
  1. A soft, crumbly limestone or chalky rock, often used in building or as a soil type.
    • The old church was built from local malm, giving it a pale, soft appearance.
    • The quarry produced malm that was used for making cement in the 19th century.
    • Farmers in this region prefer malm soil for growing certain crops because it drains well.