Recursos minerais não-metálicos do Estado de Mato Grosso do Sul, Brasil.
The
Pantanal Plain, the largest flooded area of South America, is bordered
by three plateaus that concentrate non-metallic mineral resources in the
State of Mato Grosso do Sul, Brazil. The Bodoquena Plateau is formed by
Precambrian carbonate rocks of the Corumbá Group, whereas the others,
namely the Maracaju - Campo Grande and the Taquari - Itiquira plateaus,
are supported by sedimentary and volcanic rocks of the Paraná Basin.
Carbonate rocks are exploited for cement, while powdery tufa limestone
is mined in Bonito for agricultural use. Clay, another important mineral
resource in the state, used solely for ceramics, is concentrated in the
Rio Verde de Mato Grosso-Coxim and Bela Vista-Jardim regions. Dimension
stones are restricted to marls in Bonito and granites around Porto
Murtinho. There are problems with building materiais such as sand and
gravei, because of their poor quality. Exploitation of the sands also
causes environrnental problems, especially in rivers near the cities.
Small-scale diamond mining by rudimentary processes leads to similar
environrnental problems in the Aquidauana and Coxim regions. Phosphatic
rocks occur in the Corumbá Group in the eastern Bodoquena Plateau. The
Botucatu Formation, west ofthe Campo Grande, the state capital, presents
good potential for sand, mainly for industrial purposes. Detailed
geologic studies are required, however, for better economic evaluation
of these deposits. The exploitation of industrial minerais in Mato
Grosso do Sul State is still not intensive. Nevertheless, new economic
perspectives together with the improving transportation system to the
neighboring State of São Paulo, mainly through Tietê-Paraná riverway,
favour future economic growth. Thus, it is imperative that urgent
planning measures be taken in arder to reduce negative environmental
impact.
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