Georg Brandt (26 June 1694 – 29 April 1768)[1][2] was a Swedish chemist and mineralogist who discovered cobalt c. 1735.
He was the first person to discover a metal unknown in ancient times.
He was professor of chemistry at Uppsala University, and died in Stockholm.
[citation needed] About 1741 he wrote: "As there are six kinds of metals, so I have also shown with reliable experiments... that there are also six kinds of half-metals: a new half-metal, namely Cobalt regulus[6] in addition to Mercury, Bismuth, Zinc, and the reguluses of Antimony and Arsenic".
He gave six ways to distinguish bismuth and cobalt which were typically found in the same ores: