Colemanite Definition

kōlmə-nīt
noun
A white or colorless, monoclinic mineral, Ca2B6O115H2O, that is an ore of boron; hydrous calcium borate.
Webster's New World

Origin of Colemanite

  • After William Tell Coleman (1824–1893), American merchant in California

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

  • Coleman +‎ -ite, named after William Tell Coleman (1824-1893) in 1884.

    From Wiktionary