Rare earths are among the world's most sought-after raw materials. In the Valais Binntal, three hobby researchers have found a large number of minerals. The mineral collectors have known the Knight Pass in the Binntal for a long time. It is one of the most famous find areas in Switzerland. Now three amateur mineralogists have made a startling discovery. Ate van der Burgt, Mischa Crumbach and Stéphane Cuchet are in [...]