Químico sueco George Brandt analisa um pigmento azul escuro em um minério de ferro e demonstra que este contém um novo elemento, nomeado posteriormente como cobalto.[2][3]
↑«78 Platinum». Elements.vanderkrogt.net. Consultado em 12 de setembro de 2008
↑Georg Brandt first showed cobalt to be a new metal in: G. Brandt (1735) "Dissertatio de semimetallis" (Dissertation on semi-metals), Acta Literaria et Scientiarum Sveciae (Journal of Swedish literature and sciences), vol. 4, pages 1–10. See also: (1) G. Brandt (1746) "Rön och anmärkningar angäende en synnerlig färg — cobolt" (Observations and remarks concerning an extraordinary pigment — cobalt), Kongliga Svenska vetenskapsakademiens handlingar (Transactions of the Royal Swedish Academy of Science), vol.7, pages 119–130; (2) G. Brandt (1748) “Cobalti nova species examinata et descripta” (Cobalt, a new element examined and described), Acta Regiae Societatis Scientiarum Upsaliensis (Journal of the Royal Scientific Society of Uppsala), 1st series, vol. 3 , pages 33–41; (3) James L. Marshall and Virginia R. Marshall (Spring 2003) "Rediscovery of the Elements: Riddarhyttan, Sweden,"Arquivado em 3 de julho de 2010, no Wayback Machine. The Hexagon (official journal of the Alpha Chi Sigma fraternity of chemists), vol. 94, no. 1, pages 3–8.
