miliolite limestone

from The Collaborative International Dictionary of English v.0.48

Miliolite \Mil"i*o*lite\, a.
   The same {Miliolitic}.
   [1913 Webster]

   {Miliolite limestone} (Geol.), a building stone, one of the
      group of the Paris basin, almost entirely made up of
      many-chambered microscopic shells.
      [1913 Webster]