Ouro Preto
Djalma Guimarães (November 5, 1894 – October 10, 1973), was a pioneer Brazilian geochemist. He was Professor Emeritus at the Ouro Preto Mining School (now part of the Federal University of Ouro Preto) and at the Federal University of Minas Gerais, in Belo Horizonte. At both institutions, he taught geological sciences for over 35 years.