Artificial intelligent assistant

amites

aˈmmites, aˈmites Min. Obs.
  [a. Gr. ἀµµίτης sandstone, f. ἄµµος sand.]
  An obsolete name for Oolite, in reference to its granular structure.

1750 Leonardus's Mirr. Stones 75 Amites, is a Stone of the Colour of Alumn or Nitre, but harder than either. 1753 Chambers Cycl. Supp., The Ammites appears to the eye as a composition of large sand.

Oxford English Dictionary

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