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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. [3] [4] He is also known for exposing fraudulent alchemists operating during his lifetime. [5]
In 1735, such ores were found to be reducible to a new metal (the first discovered since ancient times), which was ultimately named for the kobold. Today, some cobalt is produced specifically from one of a number of metallic-lustered ores, such as cobaltite (CoAsS). The element is more usually produced as a by-product of copper and nickel mining.
The first elemental metal with a clearly identifiable discoverer is cobalt, discovered in 1735 by Georg Brandt, by which time the Scientific Revolution was in full swing. [6] (Even then, cobalt might have been prepared before the 13th century by alchemists roasting and reducing its ore, but,in any case, its distinct nature was not recognised.) [7]
Obtained by irradiating uranium with neutrons, it was the first transuranium element discovered. [179] Shortly before that, Yoshio Nishina and Kenjiro Kimura discovered the uranium isotope 237 U and found that it beta decays into 237 93, but were unable to measure the activity of the element 93 product because its half-life was too long.
Cobalt (Co) 27 Kobold: ... Its identification was based upon the bright-blue lines in its spectrum, and it was the first element discovered by spectrum analysis.
The compounds cobalt silicate and cobalt(II) aluminate (CoAl 2 O 4, cobalt blue) give a distinctive deep blue color to glass, ceramics, inks, paints and varnishes. Cobalt occurs naturally as only one stable isotope, cobalt-59. Cobalt-60 is a commercially important radioisotope, used as a radioactive tracer and for the production of high-energy ...
Cobalt International Energy, Inc. Announces Significant North Platte Deepwater Gulf of Mexico Discovery HOUSTON--(BUSINESS WIRE)-- Cobalt International Energy, Inc. ("Cobalt") ...
The chemical elements were discovered in identified minerals and with the help of the identified elements the mineral crystal structure could be described. One milestone was the discovery of the geometrical law of crystallization by René Just Haüy , a further development of the work by Nicolas Steno and Jean-Baptiste L. Romé de l'Isle (the ...