o2G J. C. BRANNER OUTLINES OF THE GEOLOGY OF BRAZIL 



gold mines of Eio Grande do Sul (Scott). It occurs in rocks of Archean 

 age. 



Lead. — Lead is found at Abaete, in the western part of the State of 

 Minas Geraes, where attempts were made to mine it in 1800, in 1812, in 

 1825, and again in 1880, but thus far without success. It has also been 

 found in a few other places in Minas and in Sao Paulo, Maranhao, Santa 

 Catharina, and Eio Grande do Sul, but it has never been successfully 

 worked. 



Groddeck (Rio Grande do Sul) Souza (Maranhao) 



Oliveira (Minas and Santa Veiga (Minas) 



Catharina) 



Tin. — Tin has been found in the northern part of Minas, but only as 

 mineral specimens. It is also said to occur in Sao Paulo near Batea and 

 Antonio Ficou." 



Manganese. — Although Brazil only began the exportation of manganese 

 in 1894, since the year 1896 she has been one of the three greatest pro- 

 ducers of manganese ore in the world. The deposits thus far worked are 

 in Minas Geraes and Bahia. Newly discovered deposits have been opened 

 lately on the lands of the Saint John del Eey Mining Company near Morro 

 Velho in Minas, and in the Jacobina mountains near Bomfim in Bahia. 

 Lisboa reports important deposits in Matto Grosso. All of the valuable 

 deposits are in either early Paleozoic or Archean rocks. 



Beck (Minas) Katzer (Para) 



Bellet (Minas) Koeller (Brazil) 



Birkenbine (Brazil) Lisboa (Brazil) 



Branner (Bahia) Lustosa (Minas) 



Camara (Bahia) Michaeli (Minas) 



Costa (Minas) Oliveira (Minas) 



Demaret (Brazil) Pires (Minas) 



Derby (Minas) Rocha (Minas) 



Dieseldorf (Minas) Rizzini (Bahia) 



Friz (Minas) Sampaio (Bahia) 



Furniss (Bahia) Scott (Minas) 



Greven (Minas) Singewald (Minas) 



Harder (Minas) Thomas (Minas) 



Hussak (Minas) Wigg (Minas) 



* J. C. da Costa Sena : The occurrence of tin in Minas Geraes. Brazilian Mining Re- 

 view, vol. i, pp. 92-93, Rio de Janeiro, July, 1903, and Annaes da Escola de Minas 

 number 6, pp. 5-11. Ouro Preto, 1903. 



Joao Pedro Cardoso : Relatorio da Commissao Geographica e Geologica de Sao Paulo 

 para o anno de 1906, p. 25. Sao Paulo. 1907. 



