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Occurrence of Rb and Sr in Sphalerite and Mechanism of Rb-Sr Dating with Diluted Acid Leachating

会议论文信息

期刊名称：	Occurrence of Rb and Sr in Sphalerite and Mechanism of Rb-Sr Dating with Diluted Acid Leachating
责任者：	杨红梅；刘重芃；Cai, H
关键词：
会议名称：	国际地质大会 International Geological Congress
届次：	35
会议地点：	南非
召开时间：	2016-08
论文集名称：
ISBN：
项目资助信息：	This study was financially supported by Scientific Research Projects of China geological survey ；This study was financially supported by Scientific Research Projects of China geological survey ；This study was financially supported by Scientific Research Projects of China geological survey ；Ministry of Land and Resources ；Ministry of Land and Resources
摘要：	Rb-Sr dating of sphalerites has been shown a promising and effective technique for the direct dating of Pb-Zn deposits.However,this technique is still questioned by some scholars due to the divergent opinions about the occurrence of Rb and Sr and the dating mechanism.This study analyzed the contents of Rb,Sr,Pb,Zn,Fe,Ca and Mg in the hand-picked sphalerites,diluted acid leachates and sulfide residues,respectively.The analytical data shows that Rb,Pb,Zn and Fe are mainly distributed in the sulfide residues and the contents of Fe and Rb displays an approximately positive correlation with those of Zn,which indicates that the ion pair of Rb+ and Fe3+ possibly substitutes Zn2+ into the crystal lattices of sphalerites according to the ion substitution formula of 2Zn2+=Rb++M3+.
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