必须声明标量变量 "@Script_ID"。 温度、质量浓度对富氟流体中Hf高温高压水解行为的影响-《地球科学与环境学报》
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[1]刘军锋,黄建军,李震,等.温度、质量浓度对富氟流体中Hf高温高压水解行为的影响[J].地球科学与环境学报,2019,41(03):327-331.
 LIU Jun-feng,HUANG Jian-jun,LI Zhen,et al.Effect of Temperature and Mass Concentration on the Hydrolysis of Fluorine-rich Hafnium Complex in High Temperature and High Pressure Fluids[J].Journal of Earth Sciences and Environment,2019,41(03):327-331.
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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:
第41卷
期数:
2019年第03期
页码:
327-331
栏目:
基础地质与矿产地质
出版日期:
2019-05-15

文章信息/Info

Title:
Effect of Temperature and Mass Concentration on the Hydrolysis of Fluorine-rich Hafnium Complex in High Temperature and High Pressure Fluids
文章编号:
1672-6561(2019)03-0327-05
作者:
刘军锋1黄建军2李震1刘晓文1丁兴3
(1.长安大学 地球科学与资源学院,陕西 西安 710054; 2.陕西省地质调查院,陕西 西安 710054; 3.中国科学院广州地球化学研究所 同位素地球化学国家重点实验室,广东 广州 510640)
Author(s):
LIU Jun-feng1 HUANG Jian-jun2 LI Zhen1 LIU Xiao-wen1 DING Xing3
(1. School of Earth Science and Resources, Chang’an University, Xi’an 710054, Shaanxi, China; 2. Shaanxi Institute of Geological Survey, Xi’an 710054, Shaanxi, China; 3. State Key Laboratory of Isotope Geochemistry, Guangzhou Instituteof Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China)
关键词:
Hf K2HfF6络合物 水解 高温高压 富氟流体 质量浓度 累积水解平衡常数 热液
Keywords:
Hf K2HfF6 complex hydrolysis high temperature and high pressure fluorine-rich fluid mass concentration cumulative hydrolysis equilibrium constant hydrothermal solution
分类号:
P595; O614.41+3
DOI:
-
文献标志码:
A
摘要:
Hf是一种高场强元素,在地壳中的丰度较低,往往以类质同象的形式进入锆石中。以氟铪酸钾(K2HfF6)络合物为研究对象,观察它们在富水热液中的水解程度,进而研究Hf元素在地质过程中的迁移行为。结果表明:K2HfF6络合物在热液条件下能发生一定程度的水解反应,总体趋势为络合物的初始质量浓度越低且反应的温度越高,其水解程度越剧烈,络合物的稳定性也就越低; 获得了高温高压条件下K2HfF6络合物的累积水解平衡常数。同时运用实验模拟的方法, 根据提取液中Hf元素含量来推测矿物结晶时富氟流体中Hf元素含量,若以K2HfF6络合物最高配位的离子团形迁移时,Hf与F元素之间的质量浓度比值为1.6,据此可以计算成矿流体所需的最小F元素含量。
Abstract:
Hf is a high field strength element(HFSE)with low abundance in the earth’s crust, and often enters zircon in the form of isomorphism. The migration behavior of Hf in natural geological processes was studied by observing the hydrolysis degree of K2HfF6 complex in hydrothermal solution. The results show that K2HfF6 complex could undergo hydrolysis reaction to a certain extent under hydrothermal conditions, and the general trend is that the lower the initial mass concentration of the complex and the higher the reaction temperature, the more severe the hydrolysis degree and the lower the stability of the complex; the cumulative hydrolysis equilibrium constant of K2HfF6 complex under high temperature and high pressure is obtained. At the same time, according to the content of Hf in the extraction solution, the content of Hf in the fluoride-rich fluid can be estimated based on the method of experimental simulation; if the ion group migrates with the highest coordination of K2HfF6, the ratio of mass concentrations between Hf and F is 1.6, so the minimum content of F required for the mineralization fluid can be calculated.

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备注/Memo

备注/Memo:
收稿日期:2019-02-11; 修回日期:2019-03-05 投稿网址:http://jese.chd.edu.cn/
基金项目:国家重点研发计划项目(2016YFC0600204)
作者简介:刘军锋(1979-),男,陕西宝鸡人,副教授,理学博士,E-mail:junfengliu@chd.edu.cn。
更新日期/Last Update: 2019-05-20