- a mineral, aluminum borosilicate.
Origin of dumortierite
1880–85; < French, named after Eugène Dumortier, 19th-century French paleontologist; see -ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a hard fibrous blue or green mineral consisting of hydrated aluminium borosilicate. Formula: Al 7 O 3 BO 3 (SiO 4) 3
C19: named after Eugène Dumortier, 19th-century French palaeontologist who discovered it