Geology and mineral resources of the Congonhas district, Minas Gerais, Brazil. A study of pre-Cambrian sedimentary iron formation and associated deposits of hematite and manganese ores.
| Author/creator | Guild, Philip White, 1915- |
| Format | Book |
| Publication Info | Washington, U.S. Govt. Print. Off., 1957. |
| Description | v, 90 pages illustrations, maps (some color) color profiles, tables 29 cm. |
| Subjects |
| Variant title | Congonhas district, Minas Gerais, Brazil |
| Series | Geological Survey (U.S.). Professional paper 290 Geological Survey professional paper 290. ^A16492 |
| Contents | A study of pre-Cambrian sedimentary iron formation and associated deposits of hematite and manganese ores -- Prepared in cooperation with the Departmento Nacional da Produça͠o Mineral of Brazil under the auspices of the International Cooperation Administration of the United States Dept. of State. |
| Contents | Abstract -- Introduction -- Iron region of central Minas Gerais -- Congonhas district -- Location, culture, and communications -- Topographic features -- Previous geologic investigations -- Present investigation -- Acknowledgments -- Geologic setting -- General features -- Regional setting -- Congonhas district -- Basement rocks -- Metamorphosed sedimentary rocks -- Minas series -- Lower group -- Middle group -- Upper group -- Green-schist sequence -- Itacolumí series -- Intrusive rocks -- Ultramafic rocks -- Granodiorite -- Basic dike rocks -- Vein quartz -- Quartz-kyanite-pyrophyllite veins -- Quartz-specularite veins -- "Cleavage" quartz -- Structure -- Structural elements of the metamorphic rocks -- Planar elements -- Linear elements -- Joints -- Major structural features -- Folds -- Thrust faults -- Engenho fault -- Deep-focus faults -- Other faults -- Structure of the Congonhas lowland -- Metamorphism -- Regional metamorphism -- Highland areas -- Lowland areas -- Thermal metamorphism -- The green-schist problem -- Physiographic development -- Surficial deposits -- Residual deposits -- Laterite and canga -- Weathering products of dolomite -- Alluvium -- Geology of mineral deposits -- Iron -- Itabirite -- Chemical and physical nature -- Origin -- Hematite ores -- Deposits -- Mineralogic and chemical nature -- Structure and texture -- Physical properties -- Origin -- Surficial iron deposits -- Residual deposits formed by mechanical processes -- Deposits formed by chemical processes -- Manganese -- Deposits in dolomite -- Deposits in itabirite -- Deposits in clastic rocks -- Ocher -- Bauxite -- Steatite -- Talc -- Gold -- Mining -- Iron -- History and production -- Owners and operators -- Reserves -- Itabirite -- Hematite -- Surficial ores -- Mines and potential producing areas -- Casa de Pedra -- Serra do Batateiro -- Serra da Bôa Vista-das Almas -- Pico do Engenho -- Serra do Mascate -- Fábrica -- Fábrica to Vigia -- Vigia to São Julião -- East of São Julião -- Northern belt -- Serra do Pires -- Manganese -- History and past production -- Mines and prospects -- Burnier district -- Vigia -- Serra do Pires area -- Poc̦o Fundo -- Serra da Bôa Vista -- Bocaina -- Other manganese deposits in phyllite -- Potential future production -- Ocher -- Steatite -- Talc -- Dolomite -- Quartz -- Selected bibliography -- Index. |
| Abstract | A study of pre-Cambrian sedimentary iron formation and associated deposits of hematite and manganese ores. |
| Local note | Joyner- FOR JOYNER LIBRARY HOLDINGS OF THE SERIES, GEOLOGICAL SURVEY PROFESSIONAL PAPER, SEARCH BY CALL NUMBER QE75 .P9. |
| General note | Part of illustrative matter is folded in pocket. |
| General note | Prepared in cooperation with the Departmento Nacional da Produça͠o Mineral of Brazil under the auspices of the International Cooperation Administration of the United States Dept. of State. |
| Bibliography note | Includes bibliographical references (pages 86-87). |
| LCCN | gs 57000209 |
| Govt. docs number | I 19.16:290 |
| Govt. docs number | I 19.16:288-291 |
Availability
| Library | Location | Call Number | Status | Item Actions |
|---|---|---|---|---|
| Joyner | General Stacks | QE75 .P9 NO. 286-291 | ✔ Available | Place Hold |
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