| 钾盐矿床中Br的地球化学特征及研究进展 |
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| 引用本文： | 程怀德,马海州,谭红兵,许建新,张西营.钾盐矿床中Br的地球化学特征及研究进展[J].矿物岩石地球化学通报,2008,27(4). |
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| 作者姓名： | 程怀德 马海州 谭红兵 许建新 张西营 |
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| 作者单位： | 1. 中国科学院,青海盐湖研究所,青海,西宁,810008;中国科学院,研究生院,北京,100049
2. 中国科学院,青海盐湖研究所,青海,西宁,810008 |
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| 基金项目： | 老挝沙空拉空盆地钾盐资源调查评价研究
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| 摘 要： | 本文概述了Br的地球化学行为及其在钾盐矿床中的应用，重点论述了Br的分配系数和热力学模型的新发展。指出近年来用海相蒸发岩盐中的溴来评价显生宙海水组分变化行为，对于重新认识贫硫酸盐型的钾盐矿床有十分重要的意义。由于大洋中脊热液流体组分改变和海底扩张作用，使古海水组分发生变化，这种作用比碳酸盐白云石化或硫酸镁缺损使古海水组分发生变化更为重要。指出研究老挝贫硫酸盐型钾盐矿床对在我国兰坪一思茅盆地寻找钾盐矿床有重要的指导意义。
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| 关 键 词： | 溴 分配系数 钾盐矿床 兰坪-思茅盆地 |
Geochemical Characteristics of Bromide in Potassium Deposits:Review and Research Perspectives |
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| CHENG Huai-de,MA Hai-zhou,TAN Hong-bing,XU Jian-xin,ZHANG Xi-ying.Geochemical Characteristics of Bromide in Potassium Deposits:Review and Research Perspectives[J].Bulletin of Mineralogy Petrology and Geochemistry,2008,27(4). |
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| Authors: | CHENG Huai-de MA Hai-zhou TAN Hong-bing XU Jian-xin ZHANG Xi-ying |
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| Institution: | CHENG Huai-de1,2 MA Hai-zhou1,TAN Hong-bing1,XU Jian-xin1,2,ZHANG Xi-ying1 1.Qinghai Institute of Salt Lakes,Academy of Science,Qinghai Xining 810008,2.Graduate University of the Chinese Academy of Sciences,Beijing 100049 |
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| Abstract: | Bromide geochemistry played an important role in searching and in mechanism revealing of marine phase potassium deposits has been studied for a century since it was first founded in 1908 by the Germany scientist,Boeke.This paper reviewed the geochemical characteristics of bromide and its applications in the studies of potassium deposits.Especially,this paper comprehensively addressed new research progresses of partition coefficients and thermodynamic models of bromide.In recent years,Br content in the marine evaporates was used to evaluate variation of seawater composition in the Phanerozoic,and was thought to be very important in re-recognizing the forming mechanisms of MgSO4-free potassium deposits.Compared to the dolomitization or the MgSO4 depleting,the change of the hydrothermal brine flux composition at mid-ocean ridge and the spreading of ocean floor were much more important mechanisms of causing the variation of seawater composition.In the end part of this paper,several suggestions were made on studies of a MgSO4-free potassium deposit's characteristics in Laos,as an example.We believed that the better understanding of the K-Mg deposit in Laos will provide essential aids to the attempt of hunting potassium deposits at the Lanping-Simao basin of China. |
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| Keywords: | Bromide partition coefficient potassium deposits suggestion Lanping-Simao basin |
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