colemanite

[ kohl-muh-nahyt ]

noun

1. a mineral, hydrous calcium borate, Ca 2 B 6 O 11 ⋅5H 2 O, occurring in colorless or milky-white crystals.

colemanite

/ ˈkəʊlməˌnaɪt /

noun

1. a colourless or white glassy mineral consisting of hydrated calcium borate in monoclinic crystalline form. It occurs with and is a source of borax. Formula: Ca 2 B 6 O 11 .5H 2 O

Word History and Origins

Origin of colemanite¹

Named in 1884 after W. T. Coleman of San Francisco, in whose mine it was found; -ite ¹

Word History and Origins

Origin of colemanite¹

C19: named after William T. Coleman (1824–93), American pioneer, owner of the mine in which it was discovered

Example Sentences

The salts contained in these deposits are mainly borax, ulexite, and colemanite.

From Project Gutenberg

The colemanite occurs in irregular milky-white layers or nodules, mingled with more or less gypsum.

From Project Gutenberg