Artificial intelligent assistant

brewsterite

brewsterite
  (ˈbruːstəraɪt)
  [f. name of Sir David Brewster + -ite.]
  A zeolitic mineral, belonging to the hydrous silicates, white in colour, and of uneven fracture.

1843 Portlock Geol. 223 Brewsterite has been stated to occur..at the Causeway.

Oxford English Dictionary

yu7NTAkq2jTfdvEzudIdQgChiKuccveC f676317ce31dbf1aadb6ced84a707331