Jean Charles Galissard de Marignac

Jean -Charles de Galissard Marignac ( born April 24, 1817 in Geneva, † April 15, 1894 ) was a Swiss chemist.

In 1866 he succeeded to develop the first industrial process for the separation of tantalum and niobium based on the different solubility of fluorine complexes.

In 1878 he discovered the element ytterbium in a more exact investigation of Gadolinit.

In 1880, he discovered another unknown element which he named provisionally Yα. After the confirmation of the discovery by William Crookes and Paul Émile Lecoq de Boisbaudran, Lecoq de Boisbaudran called on 19 April 1886, the new element in consultation with Marignac gadolinium with the symbol Gd

In 1886 he was awarded the Davy Medal. In 1887 he was admitted as a foreign member of the Accademia Nazionale dei Lincei in Rome.

433702
de