Researches the mineral and chemical composition of sediments of the alkaline lakes of the Pantanal Mato-grossense, with an emphasis on carbonates and authigenic clay minerals, using analytical techniques as: X-ray diffraction, X-ray fluorescence, Scanning and transmission electron microscopy and spectroscopy of stable carbon and oxygen isotopes. At graduation, the course completion work was related to the mineral characterization of kidney stones, using the techniques mentioned above.