ampelite

1 definition found

ampelite - Collaborative International Dictionary of English v.0.48 :

  Ampelite \Am"pe*lite\ ([a^]m"p[-e]*l[imac]t), n. [L. ampelitis,
     Gr. 'ampeli^tis, fr. 'a`mpelos vine.] (Min.)
     An earth abounding in pyrites, used by the ancients to kill
     insects, etc., on vines; -- applied by Brongniart to a
     carbonaceous alum schist.
     [1913 Webster]