tincalconite

noun

tin·​cal·​co·​nite

tinˈkalkəˌnīt,

tiŋˈk-

plural -s

: a mineral Na₂B₄O₇.5H₂O consisting of sodium borate pentahydrate that is one of the principal ore minerals of borax and boron compounds compare kernite

Word History

Etymology

tincal + Greek konia ashes, dust + English -ite

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