scholarly journals The origin of lead and sulphur in Tulare ore field, Lece magmatic complex, SE Serbia

2018 ◽  
Vol 79 (2) ◽  
pp. 19-28
Author(s):  
Milos Velojic ◽  
Dejan Prelevic ◽  
Rade Jelenkovic
Keyword(s):  
Sulfur Isotope ◽  
Sulfur Isotopes ◽  
Isotope Composition ◽  
Precious Metals ◽  
Sulphur Isotope ◽  
Magmatic Complex ◽  
Metallogenic Province ◽  
Epithermal Deposits ◽  
Lead Zinc ◽  
Sulfur Isotope Composition

Lece magmatic complex in SE Serbia, part of the Serbo-Macedonian Metallogenic Province, is one of the most promising zones for lead, zinc and precious metals for the country. This complex was formed as a result of the post-collisional magmatic activity that lasted from Oligocene to Miocene. This study brings new lead and sulphur isotope data with an aim to constrain the origin of mineralizing fluids and to estimate the temperature of their formation. Galena from the Bakrenjaca locality shows high 207Pb/204Pb values implying that the lead was dominantly derived from the upper continental crustal geochemical reservoir which was probably recycled within the mantle and erupted during Tertiary post-collisional magmatism. Sulfur isotope composition of galena, sphalerite and pyrite show overlapping ?34S values in the range between 0 and 3? indicating a mantle origin of sulphur. Sulfur isotopes were also used to estimate the temperature under which the minerals were deposited forming a complex of veins. The calculated temperature is around 350?C. Since this temperature is too high for epithermal deposits, it is probable that the associated minerals weren?t deposited in isotopic equilibrium and other methods should be conducted for more precise temperature evaluation.

scholarly journals Effect of NO<sub>X</sub>, O<sub>3</sub> and NH<sub>3</sub> on sulfur isotope composition during heterogeneous oxidation of SO<sub>2</sub>: a laboratory investigation

2020 ◽  
Author(s):  
Zhaobing Guo ◽  
Mingyi Xu ◽  
Yuxuan He ◽  
Shuo Gao ◽  
Chenmin Xu ◽  
...  
Keyword(s):  
Sulfur Isotope ◽  
Sulfur Isotopes ◽  
Isotope Composition ◽  
Oxidation Reactions ◽  
Aerosol Formation ◽  
Heterogeneous Oxidation ◽  
Fractionation Factor ◽  
Oxidation Processes ◽  
Sulfate Production ◽  
Sulfur Isotope Composition

Abstract. Sulfate aerosol is a major fraction of haze, playing an important role in aerosol formation and aging processes. In order to understand the mechanism of sulfate formations, the characteristics of sulfur isotope composition were determined during different heterogeneous oxidation reactions of sulfur dioxide. Although NH3 was more beneficial to the formation of sulfate, compared with NOX and O3, 34S tended to enrich the lighter sulfur isotopes in the presence of NH3. Furthermore, in consideration of the potential competitive effects of NOX, O3, and NH3 in the heterogeneous oxidation processes, the contributions of each gas were evaluated via Rayleigh distillation model. Notably, NOX oxidation contributed 67.5±10 % of the whole sulfate production, which is higher than O3 (13.3±10 %), and NH3 oxidation (19.2±10 %) on the basic of the average fractionation factor. The observed δ34S values of sulfate aerosols were negatively correlated with sulfur oxidation ratios, owing to the sulfur isotopic fractionations during the sulfate formation processes. Given the isotope mass balance, the overall δ34Ssulfate approached the δ34Semission as oxidation of SO2 progressed, suggesting that NOX played a major rather than a sole role in the different heterogeneous oxidation processes of SO2.

Pyrite Morphology and Sulfur Isotope Composition in The Bazhenov Formation of West Siberia

2021 ◽  
Author(s):  
E. Idrisova ◽  
T. Karamov ◽  
A. Voropaev ◽  
R. Gabitov ◽  
N. Bogdanovich ◽  
...  
Keyword(s):  
Sulfur Isotope ◽  
Isotope Composition ◽  
West Siberia ◽  
Bazhenov Formation ◽  
Sulfur Isotope Composition
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