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schillerite

schillerite Min.
  (ˈʃɪləraɪt)
  [f. schiller + -ite.]
  An aggregate of anorthite and enstatite, allied to diallage.

1862 Dana Man. Geol. vii. 82 Schillerite or Schiller rock, Diallage rock. A dark green to greenish-black rock made up of Schiller spar.

Oxford English Dictionary

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