colemanite

(kōl′mən īt′)

☆

noun

a white or colorless, monoclinic mineral, CaBO·5HO, that is an ore of boron; hydrous calcium borate

Origin: after W. T. Coleman (1824-93), U.S. manufacturer of borax

See colemanite in American Heritage Dictionary 4

noun

A natural white or colorless hydrated calcium borate, Ca₂B₆O₁₁·5H₂O, a principal source of borax.

Origin:

Origin: After William Tell Coleman (1824-1893), American merchant in California

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