TY - JOUR AU - Ceron Loayza, MarĂ­a Luisa AU - Bravo Cabrejos, Jorge Aurelio AU - Reyes Navarro, F. A. R. AU - Urcia Chavez, Franco PY - 2015/09/07 Y2 - 2024/03/28 TI - An updated research on three therapeutically-used Peruvian lagoons by using physical techniques JF - Journal of Metals, Materials and Minerals JA - J Met Mater Miner VL - 25 IS - 1 SE - Original Research Articles DO - UR - https://jmmm.material.chula.ac.th/index.php/jmmm/article/view/126 SP - AB - Herein, we determine the elemental, structural and mineralogical characterization of samples collected in three Peruvian lagoons; likewise, we investigate the physical and chemical properties of their fractions, both clay and magnetic. These lagoons are located in the Chilca District, Cate Province, southern Lima Region, Peru; their morphology has been altered since we carried out a previous study five years ago. The physical analytical techniques we used were energy dispersive X-ray fluorescence (EDXRF); X-ray diffractometry (XRD); and transmission Msbauer spectroscopy (TMS), at room and liquid-helium temperatures, and at low and high velocities. The results indicate that dolomite is the main clayey phase presenting structural sites occupied by Fe<sup>+2</sup> and Fe<sup>+3</sup> cations; the mineralogy of the magnetic fraction shows the presence of hematite and magnetite. ER -