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1801 in science
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==Chemistry== * November 26 – [[Charles Hatchett]] announces to the [[Royal Society]] his discovery of the chemical element [[niobium]], which he calls "[[columbium]]", in the ore [[columbite]] (it is renamed in 1950).<ref>{{cite book|chapter=1801|title=The People's Chronology|editor-last=Everett|editor-first= Jason M.|publisher=Thomson Gale|year=2006}}</ref> * [[Vanadium]], a transition metal, is discovered by [[Andrés Manuel del Río]] in Mexico. * [[René Just Haüy]] publishes his ''Traité de minéralogie''.
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