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Iron Isotopes Constrain the Metal Sources of Skarn Deposits: A Case Study from the Han-Xing Fe Deposit, China

文献类型：期刊论文

作者Zhu, Bin6,7; Zhang, Hongfu6; Santosh, M.4,5; Su, Benxun3,6; Zhang, Pengfei2; Han, Chunming6; He, Yongsheng1
刊名MINERALS
出版日期2020-11-01
卷号10期号:11页码:17
关键词Han-Xing iron deposit iron isotopes metal source isotope fractionation mass balance
DOI10.3390/min10110951
英文摘要Magmatic fluids and leaching of rocks are regarded as the two sources of magmatic hydrothermal deposits, but their relative contributions to the metals in the deposits are still unclear. In this study, we combine major elements and Fe isotopes in two sets of rocks from the Han-Xing iron skarn deposit in China to constrain the iron sources. The positive correlation between the delta Fe-56 and n-ary sumation Fe2O3/TiO2 of altered diorites ( n-ary sumation Fe2O3 refers to the total iron) demonstrates that heavy Fe isotopes are preferentially leached from diorites during hydrothermal alteration. However, except for the pyrite, all the rocks and minerals formed in the skarn deposit are enriched in the light Fe isotope relative to the fresh/less altered diorites. Therefore, besides the leaching of rocks, the Fe isotopically light magmatic fluid also provides a large quantity of iron for this deposit. Based on the mass balance calculation, we conclude that iron from magmatic fluid is almost 2.6 times as large as that from the leaching of rocks. This is the first study to estimate the relative proportions of iron sources for Fe deposits by using Fe isotopes. Here, we propose that the high delta Fe-56 of magmatic intrusions combining the positive correlation between their n-ary sumation Fe2O3/TiO2 and delta Fe-56 could be taken as a fingerprint of exsolution or interaction with magmatic fluids, which contributes to the exploration of magmatic hydrothermal ore deposits.
WOS关键词ORE-DEPOSITS ; FRACTIONATION ; PORPHYRY ; FLUIDS ; EQUILIBRIUM ; EVOLUTION ; MINERALIZATION ; GEOCHEMISTRY ; SYSTEMATICS ; MAGNETITE
资助项目Natural Science Foundation of China[41688013] ; Beijing Research Institute of Uranium Geology[ST1702]
WOS研究方向Mineralogy ; Mining & Mineral Processing
语种英语
WOS记录号WOS:000593286300001
出版者MDPI
资助机构Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Beijing Research Institute of Uranium Geology ; Beijing Research Institute of Uranium Geology ; Beijing Research Institute of Uranium Geology ; Beijing Research Institute of Uranium Geology ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Beijing Research Institute of Uranium Geology ; Beijing Research Institute of Uranium Geology ; Beijing Research Institute of Uranium Geology ; Beijing Research Institute of Uranium Geology ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Beijing Research Institute of Uranium Geology ; Beijing Research Institute of Uranium Geology ; Beijing Research Institute of Uranium Geology ; Beijing Research Institute of Uranium Geology ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Beijing Research Institute of Uranium Geology ; Beijing Research Institute of Uranium Geology ; Beijing Research Institute of Uranium Geology ; Beijing Research Institute of Uranium Geology
源URL[http://ir.iggcas.ac.cn/handle/132A11/98655]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Zhu, Bin
作者单位1.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China
2.Univ Hong Kong, Dept Earth Sci, Hong Kong, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Univ Adelaide, Dept Earth Sci, Ctr Tecton Resources & Explorat, Adelaide, SA 5005, Australia
5.China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China
6.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
7.Beijing Res Inst Uranium Geol, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Zhu, Bin,Zhang, Hongfu,Santosh, M.,et al. Iron Isotopes Constrain the Metal Sources of Skarn Deposits: A Case Study from the Han-Xing Fe Deposit, China[J]. MINERALS,2020,10(11):17.
APA Zhu, Bin.,Zhang, Hongfu.,Santosh, M..,Su, Benxun.,Zhang, Pengfei.,...&He, Yongsheng.(2020).Iron Isotopes Constrain the Metal Sources of Skarn Deposits: A Case Study from the Han-Xing Fe Deposit, China.MINERALS,10(11),17.
MLA Zhu, Bin,et al."Iron Isotopes Constrain the Metal Sources of Skarn Deposits: A Case Study from the Han-Xing Fe Deposit, China".MINERALS 10.11(2020):17.

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来源：地质与地球物理研究所

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