Yale Physics Department - Steven Girvin, Eugene Higgins Professor of Physics, After lecturing in Stockholm in June, visited the small quartz mine in the nearby village of Ytterby, from which the elements
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![Dr Katie Sizeland on X: "Today's visit: the #Ytterby mine. And it all started with an unusually heavy black rock. 7 new elements including the first discovered #RareEarth element were found here! Dr Katie Sizeland on X: "Today's visit: the #Ytterby mine. And it all started with an unusually heavy black rock. 7 new elements including the first discovered #RareEarth element were found here!](https://pbs.twimg.com/media/DleCAvcW0AA9nm8.jpg:large)
Dr Katie Sizeland on X: "Today's visit: the #Ytterby mine. And it all started with an unusually heavy black rock. 7 new elements including the first discovered #RareEarth element were found here!
![File:Ur AB Nordiska Kompaniets varukatalog. Herrar i hattar och ytterrockar - Nordiska Museet - NMA.0035898.jpg - Wikimedia Commons File:Ur AB Nordiska Kompaniets varukatalog. Herrar i hattar och ytterrockar - Nordiska Museet - NMA.0035898.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/1/1a/Ur_AB_Nordiska_Kompaniets_varukatalog._Herrar_i_hattar_och_ytterrockar_-_Nordiska_Museet_-_NMA.0035898.jpg)