Rb-Sr, Sm-Nd, and Pb isotopes systematics of pyrite: Implications for the age and genesis of lode gold deposits

Jin Hui Yang; Xin Hua Zhou

doi:10.1130/0091-7613(2001)029<0711:RSSNAP>2.0.CO;2

Rb-Sr, Sm-Nd, and Pb isotopes systematics of pyrite: Implications for the age and genesis of lode gold deposits

Jin Hui Yang^*, Xin Hua Zhou

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

286 Citations (Scopus)

Abstract

Lode gold deposits commonly consist of pyrite and lesser amounts of lead and zinc sulfides accompanied by quartz and calcite. Their exact origin remains controversial mainly because of the scarcity of reliable geochronological data. Here we present direct Rb-Sr dating of pyrite from a lode gold deposit and propose the method as a useful geochronological technique for gold mineralization for which age data are poor. A positive correlation between present-day ⁸⁷Sr/⁸⁶Sr and ⁸⁷Rb/⁸⁶Sr ratios of pyrite (FeS₂) subsamples from the Linglong gold mine of China corresponds to an age of 122-123 Ma, which dates the age of gold mineralization. The Sr, Nd, and Pb isotopic compositions of pyrites and the associated rocks suggest that the hydrothermal fluids responsible for the pyrite and gold mineralization were probably derived from a mixed source (i.e., degassing of mafic magmas and meteoric water that had leached the country rocks).

Original language	English
Pages (from-to)	711-714
Number of pages	4
Journal	Geology
Volume	29
Issue number	8
DOIs	https://doi.org/10.1130/0091-7613(2001)029<0711:RSSNAP>2.0.CO;2
Publication status	Published - Aug 2002
Externally published	Yes

Keywords

Age determination
Gold deposit
Jiaodong Peninsula
Pyrite
Rb-Sr geochronology

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10.1130/0091-7613(2001)029<0711:RSSNAP>2.0.CO;2

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title = "Rb-Sr, Sm-Nd, and Pb isotopes systematics of pyrite: Implications for the age and genesis of lode gold deposits",

abstract = "Lode gold deposits commonly consist of pyrite and lesser amounts of lead and zinc sulfides accompanied by quartz and calcite. Their exact origin remains controversial mainly because of the scarcity of reliable geochronological data. Here we present direct Rb-Sr dating of pyrite from a lode gold deposit and propose the method as a useful geochronological technique for gold mineralization for which age data are poor. A positive correlation between present-day 87Sr/86Sr and 87Rb/86Sr ratios of pyrite (FeS2) subsamples from the Linglong gold mine of China corresponds to an age of 122-123 Ma, which dates the age of gold mineralization. The Sr, Nd, and Pb isotopic compositions of pyrites and the associated rocks suggest that the hydrothermal fluids responsible for the pyrite and gold mineralization were probably derived from a mixed source (i.e., degassing of mafic magmas and meteoric water that had leached the country rocks).",

keywords = "Age determination, Gold deposit, Jiaodong Peninsula, Pyrite, Rb-Sr geochronology",

author = "Yang, {Jin Hui} and Zhou, {Xin Hua}",

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T2 - Implications for the age and genesis of lode gold deposits

AU - Yang, Jin Hui

AU - Zhou, Xin Hua

PY - 2002/8

Y1 - 2002/8

N2 - Lode gold deposits commonly consist of pyrite and lesser amounts of lead and zinc sulfides accompanied by quartz and calcite. Their exact origin remains controversial mainly because of the scarcity of reliable geochronological data. Here we present direct Rb-Sr dating of pyrite from a lode gold deposit and propose the method as a useful geochronological technique for gold mineralization for which age data are poor. A positive correlation between present-day 87Sr/86Sr and 87Rb/86Sr ratios of pyrite (FeS2) subsamples from the Linglong gold mine of China corresponds to an age of 122-123 Ma, which dates the age of gold mineralization. The Sr, Nd, and Pb isotopic compositions of pyrites and the associated rocks suggest that the hydrothermal fluids responsible for the pyrite and gold mineralization were probably derived from a mixed source (i.e., degassing of mafic magmas and meteoric water that had leached the country rocks).

AB - Lode gold deposits commonly consist of pyrite and lesser amounts of lead and zinc sulfides accompanied by quartz and calcite. Their exact origin remains controversial mainly because of the scarcity of reliable geochronological data. Here we present direct Rb-Sr dating of pyrite from a lode gold deposit and propose the method as a useful geochronological technique for gold mineralization for which age data are poor. A positive correlation between present-day 87Sr/86Sr and 87Rb/86Sr ratios of pyrite (FeS2) subsamples from the Linglong gold mine of China corresponds to an age of 122-123 Ma, which dates the age of gold mineralization. The Sr, Nd, and Pb isotopic compositions of pyrites and the associated rocks suggest that the hydrothermal fluids responsible for the pyrite and gold mineralization were probably derived from a mixed source (i.e., degassing of mafic magmas and meteoric water that had leached the country rocks).

KW - Age determination

KW - Gold deposit

KW - Jiaodong Peninsula

KW - Pyrite

KW - Rb-Sr geochronology

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JO - Geology

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ER -

Rb-Sr, Sm-Nd, and Pb isotopes systematics of pyrite: Implications for the age and genesis of lode gold deposits

Abstract

Keywords

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