Mechanism and Rate of Oxidation of Pyrrhotite

主要研究者将研究动力学和机制 磁黄铁矿和硫铁矿的水氧化作用 各种地质条件。 主要技术是 采用穆斯堡尔谱和化学分析， 溶解的离子铁和硫。 各种表面敏感 光谱技术也将用于探测瞬态 矿物表面上的物种，并反过来帮助确定反应 机制 这项研究将有助于更好地了解， 海底铁赭石形成速率的地质学家 来自海洋含硫化物组合和铁帽的矿床 在矿床上方。

The principal investigator will study the kinetics and mechanism of aqueous oxidation of the minerals pyrrhotite and troilite under a variety of geological conditions. Principal techniques to be employed are Mossbauer spectroscopy and chemical analysis for dissolved ionic iron and sulfur. A variety of surface-sensitive spectroscopic techniques also will be utilized to detect transient species on mineral surfaces and to in turn help determine reaction mechanism. This research will lead to a better understanding by geologists of the rates of formation of seafloor iron ochre deposits from marine sulfide-bearing assemblages and of gossans above ore deposits.