Artificial intelligent assistant

ottrelite

ottrelite Min.
  (ˈɒtrəlaɪt)
  [Named after Ottrez, in Belgium, where found: see -lite.]
   1. An obsolete synonym of diallage. (So named by Wolff of Spa, 1812.)
  2. A hydrous silicate of aluminium, iron, and manganese, found in greyish to black crystalline scales. (So named by Damour, 1842.)

1844 Dana Min. 529 Ottrelite..scratches glass with difficulty. 1879 Rutley Stud. Rocks x. 132.


Oxford English Dictionary

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