Collaborative Research: Halogen Partitioning in Magmatic Systems

该项目的目标是继续研究岩浆系统中亲石元素的行为，特别是通过实验研究含卤矿物和共存的硅酸盐液体之间卤素的分布。本文重点研究了控制硅酸盐液体与黑云母、角闪孔、磷灰石和钛矿之间卤素分布的一些化学参数。通过对这些参数的适当评估，这些矿物可能最终能够用作演化中的岩浆-热液系统中卤素浓度的直接监测仪。这些知识对于确定卤素在与花岗岩相关的磁性热液矿床形成过程中充当助熔剂和矿化剂的能力，以及更一般地说，对于控制其他基本参数，如液体结构、粘度和密度、相关系、扩散、形态和元素的液体/流体/晶体分配等，具有很大的价值。这是一个合作项目，涉及奥古斯塔纳学院的本科生和俄克拉荷马大学的研究人员。

9625517 London The goal of this project is to continue studying the behavior of lithophile elements in magmatic systems and specifically to investigate experimentally the distribution of halogens between halogen-bearing minerals and coexisting silicate liquids. This proposal focuses on the some of the chemical parameters controlling the distribution of halogens between silicate liquids and biotite, amphibole, apatite, and titanite. With proper assessment of these parameters, these minerals may eventually be able to be used as direct monitors of halogen concentrations within evolving magmatic-hydrothermal systems. Such knowledge us of great value in determining the ability of halogens to act as fluxes and mineralizers during the formation of granite-associated magnetic-hydrothermal ore deposits and, more generally, to control other fundamental parameters such as liquid structure, viscosity, and density, phase relationships, and diffusion, speciation, and liquid/fluid/crystal partitioning of elements. This is a collaborative project involving undergraduate students at Augustana College and researchers at the University of Oklahoma.