Reaction pathways of iron-sulfide mineral formation: An in situ X-ray diffraction study

  title={Reaction pathways of iron-sulfide mineral formation: An in situ X-ray diffraction study},
  author={Min Lin and Yen‐Hua Chen and Jey Jau Lee and Hwo Shuenn Sheu},
  journal={European Journal of Mineralogy},
Iron sulfides were synthesized via a co-precipitation method. In addition, synchrotron-radiation experiments were performed under a range of pH and temperature conditions (up to 100 °C) to compare the results of in situ and ex situ crystal growth investigation of iron sulfides. In acidic environments, H 2 S acts as an oxidant, oxidizing Fe 2+ to Fe 3+ and allowing formation of greigite from mackinawite. However, under neutral conditions, due to very low H 2 S concentrations, the oxidant may be… 
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