@article{fdi:010079441,
  title = {{T}in stable isotopes in magmatic-affected coal deposits : insights in the geochemical behavior of tin},
  author = {{Q}u, {Q}. {Y}. and {L}iu, {G}. {J}. and {H}enry, {M}. and {P}oint, {D}avid and {C}hmeleff, {J}. and {S}un, {R}. {Y}. and {S}onke, {J}. {E}. and {C}hen, {J}. {B}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}in ({S}n) is a redox-sensitive element and geochemically incompatible that accumulates in evolved magmas and associated hydrothermal fluids. {H}ere, a {S}n stable isotope approach is used to characterize sources and geochemical behaviors of {S}n in magmatic intruded coal deposits by combining with petrographic and elemental analysis. {S}n isotope ratios of twelve coal samples with various magmatic-affected degrees show a delta {S}n-120/118 variation from -0.06 to 0.22%. (2 sigma of 0.07 parts per thousand, relative to {NIST} 3161a). {B}asing on {S}n isotope data and geochemical characteristics of the samples, we suggest binary source mixing and redox state related isotope shift as two mechanisms accounting for the isotope variations. {T}he first mechanism is an admixture of magmatichydrothermal fluids, characterized by high delta(120/118), into coal deposits with low delta(120/118). {A} binary mixing model is used to estimate {S}n contributions of the two end-members. {T}he second process results in a positive isotope shift caused by an oxidation of sample states when they are affected by magmatic intrusions. {I}n fact, magmatic intrusions could trigger the oxidation of {S}n, resulting in heavy {S}n isotope enrichment in the magmatic affected samples. {T}he change in coal redox-state is supported by a concomitant change of redox proxies, such as {V}/({V} + {N}i), {M}n/{C}r and {V}/{C}r. {T}he enrichment of heavy {S}n isotopes in samples impacted by magmatic hydrothermal fluids compared to normally-deposited coals could be explained by the conversion of dominant {S}n species from {S}n ({II})-{S} to {S}n ({IV})-{O} under the influence of oxidative magma, which favors the enrichment of heavier {S}n isotopes in {S}n ({IV})-{O} due to its shorter bond length. {T}his study shows that {S}n isotope ratios are useful tools for investigating {S}n geochemical behavior in different {E}arth reservoirs and during redox sensitive processes.},
  keywords = {{T}in ; {T}in isotopes ; {M}agma intrusion ; {B}inary mixing models ; {R}edox states ; {CHINE} ; {ANHUI} {PROVINCE} ; {HUAINAN} ; {ZHUJI}},
  booktitle = {},
  journal = {{A}pplied {G}eochemistry},
  volume = {119},
  numero = {},
  pages = {art. 104641 [10 p.]},
  ISSN = {0883-2927},
  year = {2020},
  DOI = {10.1016/j.apgeochem.2020.104641},
  URL = {https://www.documentation.ird.fr/hor/fdi:010079441},
}