Continuing Experiments on the Chemical Kinetics of Ore-And Rock-Forming Minerals in Hydrothermal Systems

该项目将继续研究以下系统在温度高达350℃的水热溶液中矿物的溶解动力学：方解石和文石（接近完成）；萤石（接近完工）；磁性和赤铁矿（正在进行中）；钠长石（最近开始）；硫酸盐矿物重晶石、天青石和角菱石（新研究）。我们还研究了溶解盐和有机物对石英、萤石、文石、方解石和钠长石溶解速率的影响。目前正在测量方解石的应变和矿物缺陷密度对溶解速率的影响，并将扩大到包括石英、萤石和钠长石。这项工作适用于热液矿石和矿床的成因，晚期成岩作用和矿物蚀变过程。

This project will continue research on the dissolution kinetics of minerals in hydrothermal solutions for the following systems to temperatures of up to 350oC: calcite and aragonite (near completion); fluorite (near completion); magnetic and hematite (in progress); albite (recently begun); and the sulfate minerals barite, celestite and anglesite (new studies). We are also studying the effect dissolved salts and organic compounds have on dissolution rates of quartz, fluorite, aragonite, calcite and albite. The effect of strain and mineral defect densities on dissolution rate is being measured for calcite currently, and will be expanded to include quartz, fluorite and albite. This work applies to the genesis of hydrothermal ores and mineral deposits, to late diagenesis, and mineral alteration processes.