Definitions for ulexiteyuˈlɛk saɪt
Random House Webster's College Dictionary
a whitish mineral, hydrous sodium calcium borate, NaCaB5O9∙8H2O, occurring in arid regions as rounded masses of radiating crystal needles.
Origin of ulexite:
1865–70; after George L. Ulex, German chemist
A white mineral with triclinic crystals, NaCaBOu00B78HO.
a mineral occurring in white rounded crystalline masses. It is a hydrous borate of lime and soda