Tagged: earth

Australia Challenges China In Mining For Necessary Elements

Australia Challenges China In Mining For Necessary Elements

In 1839 the Swedish chemist Carl Gustaf Mosander began to systematically analyze the mixed uncommon earths, discovering and naming lanthanum, erbium, and terbium. In the second half of the 19th century, chemists Gustav Kirchhoff and Robert Bunsen created spectroscopy as a method for identifying elements by examining light...