| 词源 |
gadolinite; gadolinium. In 1794 Finnish chemist Johann Gadolin analyzed a black mineral found in rare-earth elements at Ytterly, near Stockholm, Sweden. The mineral, from which he extracted the oxide yttria, was named gadolinite in his honor eight years later. Gadolin (1760–1852) also has the metallic chemical element gadolinium to commemorate him. It was dis- covered in 1880 by the Swiss chemist J. C. G. de Marignac, be- ing one of several elements extracted from gadolinite. Marignac did not name the new element for Gadolin until six years after his discovery. |