from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A white mineral, NaCaB5O9·8H2O, that forms rounded masses of very fine needle-shaped crystals.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A white mineral with triclinic crystals, NaCaB5O9·8H2O.
from the GNU version of the Collaborative International Dictionary of English
- n. A mineral occurring in white rounded crystalline masses. It is a hydrous borate of lime and soda.
from The Century Dictionary and Cyclopedia
- n. A hydrous borate of calcium and sodium, occurring in loose rounded masses with fibrous structure and white color. Also called boronatrocalcite, natroborocalcite.
After Georg Ludwig Ulex (1811-1883), German chemist.(American Heritage® Dictionary of the English Language, Fourth Edition)
Named after the German chemist George Ludwig Ulex (1811-1883). (Wiktionary)