中文摘要:在海相蒸发岩矿床的地质-地球化学研究中，常应用盐类矿物中的微量元素来研究钾盐矿床的成因和成矿指示标志，Br、Rb就是其中很重要的2种微量元素。缺硫酸镁型钾盐矿床在成盐过程中会蒸发沉积形成氯化物型的盐类物质， Br、Rb按一定的规律分配到这些盐类物质中而不形成独立矿物。在盐类物质蒸发结晶过程中，Br、Rb在固_液相之间的分配主要受温度控制。文章通过Br和Rb的地球化学特征及微量元素分配的热力学分析，建立了Br、Rb在盐类矿物相中的分配系数与温度间的热力学函数模型:，并探讨了利用这些公式来计算出钾盐矿床结晶作用形成盐类物质时的古温度，这对研究钾盐矿床形成时的古环境、物质基础条件、物理化学条件等具有重要意义。
Abstract:In the study of geochemistry and geology of evaporates, trace elements are often used as indicators for genesis and metamorphism in salt deposits, with bromide and rubidium being most important. In the salt-forming process of MgSO4-free potassium deposits, chlorine-bearing minerals are formed as a function of the evaporation, and bromide and rubidium generally enter these chloride minerals without forming independent minerals. Moreover, the distribution of bromide and rubidium in the solid and the aqueous solution is mainly controlled by temperature. In this paper, the thermodynamic function model between bromide and rubidium partition coefficients and temperature is established by analysis of geochemical characteristics of bromide and rubidium and thermodynamic analysis of trace element distribution. The paleotemperature of salt-mineral crystallization in the period of potassium deposit formation is reconstructed as a function of calculation according to the thermodynamic function model.This study is of great significance in understanding the MgSO4-free potash deposits and, especially, the paleoenvironment, provenance and physical-chemical conditions for the formation of these ore deposits.
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基金项目:本文得到云南省大中型企业委托项目“老挝沙空拉空盆地钾盐研究（编号：49WT2006003）”的资助
引用文本：
程怀德,马海州,山发寿,高东林,李善平,王明相,唐启亮.2010.温度影响溴和铷分配的热力学分析及在钾盐矿床中的应用[J].矿床地质,29(4):704~712程怀德,马海州,山发寿,高东林,李善平,王明相,唐启亮.2010.Thermodynamic analysis of influence of temperature on bromide and rubidium partition coefficients and its application to potassium deposits[J].Mineral Deposits29(4):704~712
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