FERREIRA, V. M.; FERREIRA, Vandick Medeiros.
Résumé:
The studies presented were performed aiming at a better knowledge of the
kaolin from the region of Borborema-Seridó (Paraíba and Rio Grande do
North, Brazil) and consist of: a detailed presentation of sample preparation
for analysis; a brief review of the general geology and pegmatites as well as the
pegmatites of the region (some of them kaolinized) followed by description
of the pegmatites focused on this research; a mineralogical examination
of the kaolinite-serpentine group emphasizing kaolinite and its structure
crystallographic with its possible formation processes; a show about the
caufin / cauFinita occurrences in the Brazilian Northeast, Brazil and abroad, with
its main industrial applications. Then the results of the
chemical (ICP-MS) and diffraction (X-RAY) analyzes performed, showing
Li, Ti, Cr, Cu, Ba, Sr, Bi, Nb and TI elements found in
Alto Boqueirão (ALTO CABEQA) samples. In the end, the work, always
accompanied by bibliographic studies, was concluded presenting as possible
cause of the formation of the studied kaolin kaolin, surface waters
descendants
