Characterization by FTIR of Oxidized Pyrargyrite with Sodium Sulfide

• Published in: Characterization of Minerals, Metals, and Materials 2020 pp. 445 - 450
• Main Authors: Espinoza, Yessica Paulina Gómez, Pérez, M. Reyes, Beas, Elia Guadalupe Palacios, Juárez Tapia, J. C., Pérez-Labra, M., Reyes Domínguez, Iván A., Guerrero, Mizraim Uriel Flores, Cruz, Víctor Esteban Reyes
• Format: Book Chapter
• Language: English
• Published: Cham Springer International Publishing
• Series: The Minerals, Metals & Materials Series
• Subjects: Acanthite; FTIR; Oxidation; Pyrargyrite
• ISBN: 9783030366278; 3030366278
• ISSN: 2367-1181; 2367-1696
• DOI: 10.1007/978-3-030-36628-5_43

PyrargyritePyrargyriteisCharacterizationaFourier Transform Infrared (FTIR)silver-richPyrargyrite sulfosal of formula Ag3SbS3, considered a refractory species to leachingLeaching with cyanideCyanide solutions. In this research work, the characterizationCharacterization by infrared spectroscopy by Fourier transform and X-ray diffraction (XRDX-ray Diffraction (XRD)) of the oxidationOxidation of pyrargyritePyrargyrite with sodium sulfide is presented. The XRDX-ray Diffraction (XRD) results of the oxidationOxidation with sodium sulfide show that the pyrargyritePyrargyrite PDF 00-019-1135 is transformed into silver sulfide acanthiteAcanthite identified with PDF 96-901-1415, and the rosinckyite phase was also detected PDF 96-901-2782 as well as Ag2O3 PDF 96-150-9693. The characterizationCharacterizationby FTIRFourier Transform Infrared (FTIR) shows the absorption bands in 534, 760, 1019, and 1384 cm−1 characteristics of the presence of Sb–O bonds of Sb2O3, and these oxides decisively influence the leachingLeaching of silver, due to the formation of a passivationPassivation layer on the mineral affecting the success of the leachingLeaching.