Investigation of Apatite F-Cl-OH Solid Solution as a Monitorof Volatile Fugacities: Experimental Calibration and Applications to Volcanic Rocks

磷灰石类矿物是重要的伴生矿物 各种岩石中的矿物质。 作为骨骼的主要成分 牙齿是医学领域许多研究的对象， 并被商业开发用于许多重要用途。 的 磷灰石的化学和结构相对简单， 在非常广泛的岩石类型中出现， 理想的矿物学“监测”的相对活动， 氟，氯和水在环境中，它 结晶 建议通过以下方式校准该“监测器”： 确定固溶体混合行为并通过评估 端元热力学性质的实验在0.5 Kb 压力和温度在600 ° C和900 ° C之间。 的 从这项研究中获得的信息将具有重要意义。 应用于研究火成岩过程和火山作用 现象、斑岩矿床的形成和斑岩的成分 变质流体 获得的基本热力学数据 可能在其他科学和化学领域有潜在的应用 工程.

Minerals of the apatite group are very important accessory minerals in all types of rocks. As a major constituent of bones and teeth it is the object of much research in the medical field, and is commercially exploited for a number of important uses. The relative chemical and structural simplicity of apatite and its occurrence in a very wide range of rock types make it potentially ideal as s mineralogical "monitor" of the relative activities of fluorine, chlorine and water in the environment in which it crystallized. It is proposed to calibrate this "monitor" by determining the solid solution mixing behavior and by evaluation of endmember thermodynamic properties with experiments at 0.5 Kb pressure, and temperatures between 600o and 900oC. The information to be derived from this study will have important applications in the study of igneous processes and volcanic phenomena, formation of porphyry ore deposits, and composition of metamorphic fluids. The fundamental thermodynamic data obtained may potentially have applications in other sciences and chemical engineering.