tincalconite

noun
tin·​cal·​co·​nite | \ tinˈkalkəˌnīt, tiŋˈk-\
plural -s

Definition of tincalconite

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

History and Etymology for tincalconite

tincal + Greek konia ashes, dust + English -ite

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