Manganese deposits of the Serra do Navio district, Territory of Amapá, Brazil
By: by John Van N. Dorr II, Charles F. Park, Jr., and Glycon de Paiva.
Contributors: Park, Charles Frederick, 1903-; Paiva Teixeira, Glycon de.; Brazil. Departamento Nacional da Produção Mineral.; United States. Interdepartmental Committee on Scientific and Cultural Cooperation.
Series: Geological Survey bulletin -- 964-A; Geologic investigations in the American Republics
Publisher: U.S. G.P.O.
Published: 1949
Place of publication: Washington
Language: eng
Number of pages: 51
Subjects: Manganese ores -- Brazil -- Amapá (Territory); Geology -- Brazil -- Amapá (Territory); Ore deposits -- Brazil -- Amapá (Territory)
Notes: Maps on four folded plates in pocket (plates 1-4).

"Prepared in cooperation with the Divisão de Fomento da Produção Mineral, Departamento Nacional da Produção Mineral, Ministerio da Agricultura, Brazil, under the auspices of the Interdepartmental Committee on Scientific and Cultural Cooperation, Department of State."

Includes bibliographical references and index.