Collaborative Research: Crystal Chemistry of Hydrogen and Oxygen in Common Phyllosilicate Minerals

首席研究员将与俄勒冈大学的Melinda Dyar博士合作，研究来自几种不同代表性岩石来源的共存的黑云母、白云母和绿泥石的晶体化学。电子探针，穆斯堡尔和其他分析技术将被使用。这项工作将有助于更好地了解这些矿物结构中空缺的位置。它还将使人们更好地了解矿物中发生的化学取代，以及对矿物中晶体位置之间以及矿物对之间铁和氢分配的控制。这些数据对于地质学家来说是很重要的，他们利用这些矿物来估计矿物所在的岩石形成的地质条件。

The principal investigator, in collaboration with Dr. Melinda Dyar of the University of Oregon, will study the crystal chemistry of coexisting biotite, muscovite, and chlorite from several different representative rock provenances. Electron microprobe, Mossbauer, and other analytical techniques will be utilized. The work will lead to a better understanding of the location of vacancies in the structures of these minerals. It also will lead to a better understanding of the chemical substitutions that occur in the minerals and of the controls on the partitioning of ferric iron and hydrogen among crystallographic sites in the minerals, as well as between mineral pairs. These data will be of importance to geologists who use these minerals to estimate the geologic conditions of formation of rocks in which the minerals occur.