Timing and Genesis of Cu–(Au) Mineralization in the Khetri Copper Belt
1 Timing and genesis of Cu–(Au) mineralization in the Khetri Copper Belt, 2 northwestern India: constraints from in situ U–Pb ages and Sm–Nd isotopes of 3 monazite-(Ce). 4 5 Xiao-Chun Lia, Mei-Fu Zhoua, A.E. Williams-Jonesb, Yue-Heng Yangc, Jian-Feng 6 Gaod 7 a, Department of Earth Sciences, The University of Hong Kong, Hong Kong SAR, 8 China 9 b, Department of Earth and Planetary Sciences, McGill University, Montreal, Canada 10 c, State Key Laboratory of Lithospheric Evolution, Institute of Geology and 11 Geophysics, Chinese Academy of Sciences, Beijing, China 12 d, State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese 13 Academy of Sciences, Guiyang 550002, China 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 1 Li, Xiao-Chun, Mei-Fu Zhou, A. E. Williams-Jones, Yue-Heng Yang, and Jian-Feng Gao. "Timing and Genesis of Cu–(Au) Mineralization in the Khetri Copper Belt, Northwestern India: Constraints from in Situ U–Pb Ages and Sm–Nd Isotopes of Monazite-(Ce)." Mineralium Deposita (July 26 2018). http://dx.doi.org/10.1007/s00126-018-0823-3. 31 32 Abstract The Khetri Copper Belt (KCB) in northwestern India contains a number of 33 economically important IOCG-like Cu-(Au) deposits hosted in Proterozoic 34 meta-sedimentary rocks. They comprise massive, vein-type and disseminated 35 replacement ores with monazite-(Ce) locally present. In this study, in-situ U-Pb ages 36 and Sm-Nd isotopic compositions of monazite-(Ce) were obtained, in order to 37 constrain the timing of mineralization, and to trace the sources of the ore metals.
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