A white mineral, NaCaB5 O9 · 8H2 O, that forms rounded masses of very fine needle-shaped crystals.
A white triclinic mineral that forms rounded, reniform (kidney-shaped) masses of very fine needle-shaped crystals. Ulexite has the unusual optical property of projecting an image of an object placed against a transverse section of it to the opposite surface. It is usually associated with borax deposits and is found in arid environments. Chemical formula: NaCaB5O9·8H2O.
Origin of ulexite
- After Georg Ludwig Ulex (1811–1883), German chemist
From American Heritage Dictionary of the English Language, 5th Edition
- Named after the German chemist George Ludwig Ulex (1811-1883).