Dumortierite Definition

do͝o-môrtē-ə-rīt, dyo͝o-
noun
A glassy pink, green, violet, or blue aluminum borosilicate mineral, Al8 BSi3 O19 OH, used in spark-plug ceramics and as imitation lapis lazuli.
American Heritage

(mineralogy) A fibrous aluminium boro-silicate mineral that occurs in various colours.

Wiktionary

Origin of Dumortierite

  • French after Eugène Dumortier , 19th-century French paleontologist

    From American Heritage Dictionary of the English Language, 5th Edition

  • Eugene Dumortier (1803-1873), French palaeontologist, +"Ž -ite.

    From Wiktionary

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dumortierite