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

首席研究员将研究磁黄铁矿的水氧化动力学和机理。在各种物理和化学条件下，反应速率将使用穆斯堡尔技术进行研究。表面敏感技术将用于检测瞬态铁和S。这项工作将使人们更好地了解酸性矿井排水的产生、矿床上方蛛丝的形成，以及海洋扩散中心的黑烟颗粒和硫化物烟囱产生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.