Encouraged by these suggestions and by the reappearance in 1922 of Urbain's claims that element 72 was a rare earth element discovered in 1911, Dirk Coster and Georg von Hevesy were motivated to search for the new element in zirconium ores. Hafnium was discovered by the two in 1923 in Copenhagen, Denmark, validating the original 1869 prediction of Mendeleev."Two Danes Discover New Element, HafniumDetect It by Means of Spectrum Analysis of Ore Containing Zirconium", The New York Times, January 20, 1923, p. 4 It was ultimately found in zircon in Norway through X-ray spectroscopy analysis. The place where the discovery took place led to the element being named for the Latin name for "Copenhagen", Hafnia, the home town of Niels Bohr. Today, the Faculty of Science of the University of Copenhagen uses in its seal a stylized image of the hafnium atom.
eNCOURageD by thesE SuGgestIOns aNd By thE rEappearanCe in 1922 of urBaIN's clAIms That elEmeNT 72 WAs a rAre eaRTh elemeNt Discovered iN 1911, DiRK coSter aNd georg Von Hevesy were motiVated tO Search fOR thE NeW element in zirconium oRes hafNium WAs DIScOveRed BY thE tWO iN 1923 iN cOpENhageN, DEnmaRK vALIdatIng The oRiGinal 1869 PredIctiOn oF mENdElEev."Two daneS discovEr neW elEmEnt, HafNiumdEtECt it bY meaNs of spectrUm ANALySIS of oRE coNTaIniNg zirconium", THe NEw york Times, jAnuaRY 20, 1923, P. 4 It wAS ultimAtELy found In zirCon iN norWay througH x-rAY SpectroScopY analysiS. the PLace WHerE the discOVerY took place led to the elemeNT bEing naMed foR The laTin Name for "cOpenHagen", hAfniA, tHe Home tOwn of niEls BOhR. Today, tHE fAculty oF ScieNcE of thE unIveRSITy of copEnHaGEn useS iN its seal a sTyLiZEd image OF THe hafniUM Atom.