Characteristics of Geology, Fluid Inclusions and Stable Isotope of Wafang Pb-Zn Deposit in Henan

Jingyuan Chen, Changming Wang, Xinyu He, Liang Chen, Bin Wu, Qiao Wang, Duan Zhang, Enya Yao, Mengmeng Dong

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Wafang Pb-Zn deposit is located in the Xiong'er-Waifang Mountains of the southern margin of the North China craton. The ore bodies are existed in the upper Jidanping Formation of Xiong'er Group, and the ore minerals are pyrite, galena, sphalerite and little chalcopyrite, limonite, and hematite. The hydrothermal ore-forming processes are divided into three stages: quartz-pyrite stage (early stage), quartz-polymetal stage (middle stage), and quartz-carbonate vein stage (late stage). The fluid inclusions in quartz and calcite of ores are NaCl-H2O two-phase, NaCl-CO2-H2O three-phase, and pure gas. The homogeneous temperatures the two-phase inclusions in the three stages are 150-260℃, 150-230℃ and 110-160℃, respectively. The average salinity w(NaCl) in the three stages are 12.22%, 8.55%, 6.29%, respectively. The δ13CVPDB and δ18OSMOW of the calcites of the middle stage are high with the mean of -7.34‰ and 15.56‰, respectively, showing the characteristics of freshwater carbonate. The δ13CVPDB and δ18OSMOW of the late stage are at an average of -3.05‰ and 2.21‰, respectively. The δ34S values of sulfides in the early and middle stages are 2.747‰-7.737‰ and -11.187‰-7.286‰, respectively. We conclude that the ore-forming fluid in the early and middle stages was metamorphic fluid, which was related to the metamorphic dehydration of the Meso-Neoproterozoic slab subduction during Mesozoic continental collision between Yangtze and North China craton, then mixed with meteoric water in the late stage. The S isotope indicates that sulfur was derived from Meso-Neoproterozoic sedimentary stratigraphy by the reduction of marine sulfate. In the middle and late stages, negative δ34S values occurred due to the mixing with meteoric waters. The characteristics of geology and ore-forming fluid in Wafang Pb-Zn deposit are similar to orogenic deposits.

Original languageEnglish
Pages (from-to)1383-1404
Number of pages22
JournalJilin Daxue Xuebao (Diqiu Kexue Ban)/Journal of Jilin University (Earth Science Edition)
Volume47
Issue number5
DOIs
Publication statusPublished - 26 Sep 2017

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Geology
fluid inclusion
Ores
Isotopes
stable isotope
Deposits
geology
quartz
ore-forming fluid
Fluids
Quartz
meteoric water
craton
pyrite
calcite
Pyrites
Calcite
carbonate
Carbonates
continental collision

Cite this

Chen, Jingyuan ; Wang, Changming ; He, Xinyu ; Chen, Liang ; Wu, Bin ; Wang, Qiao ; Zhang, Duan ; Yao, Enya ; Dong, Mengmeng. / Characteristics of Geology, Fluid Inclusions and Stable Isotope of Wafang Pb-Zn Deposit in Henan. In: Jilin Daxue Xuebao (Diqiu Kexue Ban)/Journal of Jilin University (Earth Science Edition). 2017 ; Vol. 47, No. 5. pp. 1383-1404.
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title = "Characteristics of Geology, Fluid Inclusions and Stable Isotope of Wafang Pb-Zn Deposit in Henan",
abstract = "Wafang Pb-Zn deposit is located in the Xiong'er-Waifang Mountains of the southern margin of the North China craton. The ore bodies are existed in the upper Jidanping Formation of Xiong'er Group, and the ore minerals are pyrite, galena, sphalerite and little chalcopyrite, limonite, and hematite. The hydrothermal ore-forming processes are divided into three stages: quartz-pyrite stage (early stage), quartz-polymetal stage (middle stage), and quartz-carbonate vein stage (late stage). The fluid inclusions in quartz and calcite of ores are NaCl-H2O two-phase, NaCl-CO2-H2O three-phase, and pure gas. The homogeneous temperatures the two-phase inclusions in the three stages are 150-260℃, 150-230℃ and 110-160℃, respectively. The average salinity w(NaCl) in the three stages are 12.22{\%}, 8.55{\%}, 6.29{\%}, respectively. The δ13CVPDB and δ18OSMOW of the calcites of the middle stage are high with the mean of -7.34‰ and 15.56‰, respectively, showing the characteristics of freshwater carbonate. The δ13CVPDB and δ18OSMOW of the late stage are at an average of -3.05‰ and 2.21‰, respectively. The δ34S values of sulfides in the early and middle stages are 2.747‰-7.737‰ and -11.187‰-7.286‰, respectively. We conclude that the ore-forming fluid in the early and middle stages was metamorphic fluid, which was related to the metamorphic dehydration of the Meso-Neoproterozoic slab subduction during Mesozoic continental collision between Yangtze and North China craton, then mixed with meteoric water in the late stage. The S isotope indicates that sulfur was derived from Meso-Neoproterozoic sedimentary stratigraphy by the reduction of marine sulfate. In the middle and late stages, negative δ34S values occurred due to the mixing with meteoric waters. The characteristics of geology and ore-forming fluid in Wafang Pb-Zn deposit are similar to orogenic deposits.",
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author = "Jingyuan Chen and Changming Wang and Xinyu He and Liang Chen and Bin Wu and Qiao Wang and Duan Zhang and Enya Yao and Mengmeng Dong",
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Characteristics of Geology, Fluid Inclusions and Stable Isotope of Wafang Pb-Zn Deposit in Henan. / Chen, Jingyuan; Wang, Changming; He, Xinyu; Chen, Liang; Wu, Bin; Wang, Qiao; Zhang, Duan; Yao, Enya; Dong, Mengmeng.

In: Jilin Daxue Xuebao (Diqiu Kexue Ban)/Journal of Jilin University (Earth Science Edition), Vol. 47, No. 5, 26.09.2017, p. 1383-1404.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Characteristics of Geology, Fluid Inclusions and Stable Isotope of Wafang Pb-Zn Deposit in Henan

AU - Chen, Jingyuan

AU - Wang, Changming

AU - He, Xinyu

AU - Chen, Liang

AU - Wu, Bin

AU - Wang, Qiao

AU - Zhang, Duan

AU - Yao, Enya

AU - Dong, Mengmeng

PY - 2017/9/26

Y1 - 2017/9/26

N2 - Wafang Pb-Zn deposit is located in the Xiong'er-Waifang Mountains of the southern margin of the North China craton. The ore bodies are existed in the upper Jidanping Formation of Xiong'er Group, and the ore minerals are pyrite, galena, sphalerite and little chalcopyrite, limonite, and hematite. The hydrothermal ore-forming processes are divided into three stages: quartz-pyrite stage (early stage), quartz-polymetal stage (middle stage), and quartz-carbonate vein stage (late stage). The fluid inclusions in quartz and calcite of ores are NaCl-H2O two-phase, NaCl-CO2-H2O three-phase, and pure gas. The homogeneous temperatures the two-phase inclusions in the three stages are 150-260℃, 150-230℃ and 110-160℃, respectively. The average salinity w(NaCl) in the three stages are 12.22%, 8.55%, 6.29%, respectively. The δ13CVPDB and δ18OSMOW of the calcites of the middle stage are high with the mean of -7.34‰ and 15.56‰, respectively, showing the characteristics of freshwater carbonate. The δ13CVPDB and δ18OSMOW of the late stage are at an average of -3.05‰ and 2.21‰, respectively. The δ34S values of sulfides in the early and middle stages are 2.747‰-7.737‰ and -11.187‰-7.286‰, respectively. We conclude that the ore-forming fluid in the early and middle stages was metamorphic fluid, which was related to the metamorphic dehydration of the Meso-Neoproterozoic slab subduction during Mesozoic continental collision between Yangtze and North China craton, then mixed with meteoric water in the late stage. The S isotope indicates that sulfur was derived from Meso-Neoproterozoic sedimentary stratigraphy by the reduction of marine sulfate. In the middle and late stages, negative δ34S values occurred due to the mixing with meteoric waters. The characteristics of geology and ore-forming fluid in Wafang Pb-Zn deposit are similar to orogenic deposits.

AB - Wafang Pb-Zn deposit is located in the Xiong'er-Waifang Mountains of the southern margin of the North China craton. The ore bodies are existed in the upper Jidanping Formation of Xiong'er Group, and the ore minerals are pyrite, galena, sphalerite and little chalcopyrite, limonite, and hematite. The hydrothermal ore-forming processes are divided into three stages: quartz-pyrite stage (early stage), quartz-polymetal stage (middle stage), and quartz-carbonate vein stage (late stage). The fluid inclusions in quartz and calcite of ores are NaCl-H2O two-phase, NaCl-CO2-H2O three-phase, and pure gas. The homogeneous temperatures the two-phase inclusions in the three stages are 150-260℃, 150-230℃ and 110-160℃, respectively. The average salinity w(NaCl) in the three stages are 12.22%, 8.55%, 6.29%, respectively. The δ13CVPDB and δ18OSMOW of the calcites of the middle stage are high with the mean of -7.34‰ and 15.56‰, respectively, showing the characteristics of freshwater carbonate. The δ13CVPDB and δ18OSMOW of the late stage are at an average of -3.05‰ and 2.21‰, respectively. The δ34S values of sulfides in the early and middle stages are 2.747‰-7.737‰ and -11.187‰-7.286‰, respectively. We conclude that the ore-forming fluid in the early and middle stages was metamorphic fluid, which was related to the metamorphic dehydration of the Meso-Neoproterozoic slab subduction during Mesozoic continental collision between Yangtze and North China craton, then mixed with meteoric water in the late stage. The S isotope indicates that sulfur was derived from Meso-Neoproterozoic sedimentary stratigraphy by the reduction of marine sulfate. In the middle and late stages, negative δ34S values occurred due to the mixing with meteoric waters. The characteristics of geology and ore-forming fluid in Wafang Pb-Zn deposit are similar to orogenic deposits.

KW - C-O isotope

KW - Fluid inclusion

KW - S isotope

KW - Wafang Pb-Zn deposit

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DO - 10.13278/j.cnki.jjuese.201705105

M3 - Article

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SP - 1383

EP - 1404

JO - Jilin Daxue Xuebao (Diqiu Kexue Ban)/Journal of Jilin University (Earth Science Edition)

JF - Jilin Daxue Xuebao (Diqiu Kexue Ban)/Journal of Jilin University (Earth Science Edition)

SN - 1671-5888

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ER -