Characterization by FTIR of oxidized pyrargyrite with sodium sulfide

Yessica Paulina Gómez Espinoza, M. Reyes Pérez, Elia Guadalupe Palacios Beas, J. C. Juárez Tapia, M. Pérez-Labra, Iván A. Reyes Domínguez, Mizraim Uriel Flores Guerrero, Víctor Esteban Reyes Cruz

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

© The Minerals, Metals & Materials Society 2020. Pyrargyrite is a silver-rich sulfosal of formula Ag3 SbS3, considered a refractory species to leaching with cyanide solutions. In this research work, the characterization by infrared spectroscopy by Fourier transform and X-ray diffraction (XRD) of the oxidation of pyrargyrite with sodium sulfide is presented. The XRD results of the oxidation with sodium sulfide show that the pyrargyrite PDF 00-019-1135 is transformed into silver sulfide acanthite identified with PDF 96-901-1415, and the rosinckyite phase was also detected PDF 96-901-2782 as well as Ag2 O3 PDF 96-150-9693. The characterization by FTIR shows the absorption bands in 534, 760, 1019, and 1384 cm−1 characteristics of the presence of Sb–O bonds of Sb2 O3, and these oxides decisively influence the leaching of silver, due to the formation of a passivation layer on the mineral affecting the success of the leaching.
Original languageAmerican English
Title of host publicationCharacterization by FTIR of oxidized pyrargyrite with sodium sulfide
Pages445-450
Number of pages6
DOIs
StatePublished - 1 Jan 2020
EventMinerals, Metals and Materials Series -
Duration: 1 Jan 2020 → …

Publication series

NameMinerals, Metals and Materials Series
VolumePartF1
ISSN (Print)2367-1181

Conference

ConferenceMinerals, Metals and Materials Series
Period1/01/20 → …

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