Abstract
Iron pyrite (FeS2) has attracted significant attention as a promising inorganic material in various applications, such as electrode materials for high-energy batteries, medical diagnostics, semiconductor materials, and photovoltaic solar cells. In this study, we characterized the crystalline structure and magnetic properties of FeS2 using X-ray diffraction (XRD), vibrating sample magnetometry, and Mössbauer spectroscopy. The refined XRD patterns confirmed that the crystalline structure of FeS2 was cubic (Pa-3 space group) with lattice constant a0 = 5.417 Å. The temperature dependence of the zero-field-cooled and field-cooled curves and the hysteresis loops were measured at various temperatures between 4.2 and 295 K. The Mössbauer spectra collected in the temperature range of 4.2–500 K were fitted with one doublet. The ΔEQ values increased slightly with decreasing temperature owing to changes in the Fe–S distance. The charge state was determined to be Fe2+ based on the isomer shift (δ).
Highlights
Numerous abandoned mines are being neglected owing to various mining activities, which pollute the surrounding environment with heavy metals
Soil mixed with mine wastes and spoils have caused serious problems, including acidic drainage and extremely high concentrations of heavy metals, such as pyrite, pyrrhotite, and chalcopyrite
The hysteresis loops were measured at various temperatures in the field range of −10 to +10 kOe using a vibrating sample scitation.org/journal/adv magnetometer (VSM)
Summary
Environmental disturbances caused by human activities, such as open cast mining, have profound effects on the dynamics and functioning of ecosystems. Numerous abandoned mines are being neglected owing to various mining activities, which pollute the surrounding environment with heavy metals. Metal loadings from mine waste are far more harmful to the environment than the acidity of mine wastewater. Soil mixed with mine wastes and spoils have caused serious problems, including acidic drainage and extremely high concentrations of heavy metals, such as pyrite, pyrrhotite, and chalcopyrite. The detailed characterization of the physical characteristics of pyrite from abandoned mines provides insight into future geochemical studies of tailings and the distinction between pyrites and mine spoils. Environmental disturbances caused by human activities, such as open cast mining, have profound effects on the dynamics and functioning of ecosystems.. Numerous abandoned mines are being neglected owing to various mining activities, which pollute the surrounding environment with heavy metals.. Metal loadings from mine waste are far more harmful to the environment than the acidity of mine wastewater.. Soil mixed with mine wastes and spoils have caused serious problems, including acidic drainage and extremely high concentrations of heavy metals, such as pyrite, pyrrhotite, and chalcopyrite.. Extensive research has been conducted to improve the understanding on pyrite and develop more effective techniques for predicting and mitigating environmental problems associated with sulfide tailings.. We report on iron pyrite (FeS2), the most abundant sulfide mineral in the Guryong mine. We investigate the crystallographic and magnetic properties of FeS2 with an average particle size of 70 nm
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
