Spectroscopic Investigations of Oxidized Pyrrhotites: Kinetics and Mechanism of Aqueous Oxidation

首席研究员将研究磁黄铁矿水相氧化的动力学和机理。在各种物理和化学条件下，将使用穆斯堡尔技术研究反应速度。将利用表面敏感技术检测瞬变铁和S物种。这项工作将使人们更好地了解酸性矿山废水的产生，矿床上方的七色珊瑚的形成，以及大洋扩张中心由黑烟颗粒和硫化物烟囱形成的海底铁赭石矿床的发展。

The principal investigator will study the kinetics and mechanisms of aqueous oxidation of pyrrhotite. Under a variety of physical and chemical conditions, rates of reaction will be studied using Mossbauer techniques. Surface-sensitive techniques will be utilized to detect transient Fe and S species. The work will lead to a better understanding of the production of acid mine drainage, the formation of gossans above ore deposits, and the development of seafloor iron ochre deposits derived from black smoker particulates and sulfide chimneys at ocean spreading centers.