نوع مقاله : پژوهشی
نویسندگان
1 دانشگاه صنعتی شاهرود
2 Russian Academy of Sciences
3 University of South Africa
چکیده
کلیدواژهها
عنوان مقاله [English]
The Vanakan volcanogenic Massive Sulfide (VMS) deposit is located approximately 23 kilometers northeast of Semnan. The spectral and chemical characteristics of chlorite in the central and marginal alteration zones were investigated to evaluate parameters such as crystallite size and the Fe/(Fe+Mg) ratio using X-ray Diffraction (XRD), Energy-Dispersive X-ray Spectroscopy (EDS), and Microscopic Observations. The results of this study showed that chlorites from the proximal zone had an average Fe/(Fe+Mg) ratio of 0.56 and an average crystallite size of 25.17 nm, whereas chlorites from the distal zone exhibited a higher Fe/(Fe+Mg) ratio of 0.63 and larger crystallite sizes averaging 28.5 nm. Additionally, elevated concentrations of Zn and Mn in some proximal samples were confirmed as geochemical indicators of proximity to mineralization centers. The findings of this study indicate that the spectral and chemical characteristics of chlorite can serve as an effective tool for vectoring alteration and exploring hidden VMS systems.
کلیدواژهها [English]
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