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lavendulan

lavendulan Min.
  (ləˈvɛndjʊlən)
  Also -ane.
  [Named by Breithaupt, 1837; f. mod.L. lavendula lavender + -an.]
  Arseniate of copper with cobalt, of a lavender-blue colour.

1844 Dana Min. 527 Lavendulan..Fuses easily before the blowpipe. 1872 Nevill Catal. Min. 144 Erythrite..var. Lavendulane. 1892 Dana Min. 814 Lavendulan..Occurs with cobalt and other ores.

Oxford English Dictionary

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