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Re – Os Isotopic Age of the H ongqiling Cu – Ni Sulfide Deposit in J ilin Province, NE C hina and its Geological Significance
Author(s) -
Han Chunming,
Xiao Wenjiao,
Zhao Guochun,
Su Benxun,
Ao Songjian,
Zhang Jien,
Wan Bo,
Wang Zhongmei,
Ding Jiaxin,
Qu Wenjun,
Du Andao
Publication year - 2014
Publication title -
resource geology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.597
H-Index - 43
eISSN - 1751-3928
pISSN - 1344-1698
DOI - 10.1111/rge.12039
Subject(s) - sulfide , mineralization (soil science) , isochron , osmium , geology , rhenium , geochemistry , sulfide minerals , chemistry , catalysis , pyrite , inorganic chemistry , ruthenium , biochemistry , soil science , soil water , organic chemistry
The H ongqiling C u– N i sulfide deposit in central J ilin Province is located in the eastern part of the C entral A sian O rogenic Belt. Rhenium and osmium isotopes in sulfide minerals from the deposit are used to determine the timing of mineralization and the source of osmium, and ore metals. Sulfide ore samples have osmium and rhenium concentrations of 0.28–1.07 ppb and 2.39–13.17 ppb, respectively. Ten analyses yield an isochron age of 223 ± 9 Ma, indicating that the C u– N i sulfide deposit in the area formed in the T riassic. The initial 187 Os / 188 Os ratio is around 0.295 ± 0.019 ( MSWD = 1.14) and the δ 34 S values of sulfide ores vary from −1.50 to +3.00‰. These data indicate that the mineralizing materials were derived mainly from a mantle with some quantities of crustal components introduced into the rock‐forming and ore‐forming systems during mineralization and magmatic emplacement.