colemanite

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cole·man·ite

 (kōl′mə-nīt′)
n.
A natural white or colorless hydrated calcium borate, Ca2B6O11·5H2O, that is formed in conjunction with borax deposits and is a principal source of boric acid.

[After William Tell Coleman (1824-1893), American merchant in California.]

colemanite

(ˈkəʊlməˌnaɪt)
n
(Minerals) 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: Ca2B6O11.5H2O
[C19: named after William T. Coleman (1824–93), American pioneer, owner of the mine in which it was discovered]

cole•man•ite

(ˈkoʊl məˌnaɪt)

n.
a mineral, hydrous calcium borate, Ca2B6O11∙5H2O, occurring in colorless or milky white crystals.
[1884; after W. T. Coleman of San Francisco, in whose mine it was found]
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Piga, Arsenic Leaching by Na2S to Decontaminate Tailings Coming from Colemanite Processing, Miner Eng, 16 45 (2003).