METALLIC MINERALS 



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Bello (Minas) 

 Bovet (Minas) 

 Calogeras (Sao Paulo) 

 Campos 

 Derby (Minas) 

 Dupre (Sao Paulo) 

 Ferrand (Minas) 

 Gorceix (Minas) 

 Graga (Sao Paulo) 

 Harder and Chamberlin (Minas) 

 Kidder (Travels) 



Leith and Harder (Minas) 

 Lisboa (Matto Grosso) 

 Porto Seguro (Minas) 

 Richards (Minas) 

 Sdiiich (Minas) 

 Scott (Minas, etcetera) 

 Sena (Minas) 

 Silva (Sao Paulo) 

 Thire (Minas) 

 Wetter (Sao Paulo) 



Gold. — Gold has been mined in almost every state in Brazil, but tbe 

 principal producing states are Minas Geraes, Matto Grosso, Goyaz, and 

 Bahia. Though Brazil was at one time the greatest gold-producing 

 country in the world, there are now but few rock mines in that country, 

 and those are all in the State of Minas Geraes. A great deal that has 

 been written on the subject has but little or no scientific vakie. The most 

 important papers are by the following writers : 



Berg (Minas) 



Bohner (Minas) 



Bovet (Minas) 



Brazilian Review (Minas) 



Costa (Bahia) 



Cumenge, E. (Minas) 



Eschwege (Minas) 



Ferrand (Minas) 



Gorceix (Minas, Rio Grande do 



Sul) 

 Groddeck (Rio Grande do Sul) 

 Hussak (Minas, Goyaz) 



Jacob, R. (Minas) 



Katzer (Para) 



Kitto (Minas) 



Levat (Para) 



Monchot (Minas) 



Netto (Rio Grande do Sul) 



Porto Seguro (Minas) 



Schwerin (Minas) 



Scott (Minas) 



Sena (Minas) 



Tavares (Minas) 



Touzeau (Minas) 



Silver. — Silver is occasionally reported, but in all cases of which I have 

 any knowledge it occurs with lead in the form of argentiferous galena. 

 (See Jose P. X. da Veiga, Eevista do Archivo Publico Mineiro, volume 

 II, pages 757-765. Ouro Preto, 1897.) 



Copper. — Copper is known in Bahia, Ceara, Eio Grande do Sul near 

 Lavras, and in Matto Grosso, and it has been found in small quantities 

 in Minas Geraes near Ouro Preto and Sete Lagoas and in Santa Cath- 

 arina. The copper ores are mostly in rocks of the Brazilian complex. 



The principal papers on copper in Brazil are tho^e of Branner on 

 Bahia, Gorceix, Groddeck, Netto, Scott and Walther on Eio Grande do 

 Sul, Hussak on Sao Paulo, Small on Ceara, and Vandelli. 



Zinc. — Zinc has been found in Minas, but, so far as I have learned, 

 never in commercial quantities (Sena). A little is also found in the 



