Re os dating sulfides


09-Dec-2017 09:01

Sulfide ore samples have osmium and rhenium concentrations of 0.28-1.07ppb and 2.39-13.17ppb, respectively.Ten sulfide analyses yield an isochron age of 223 ± 9 Ma, indicating that the Cu-Ni sulfide mineralization formed in the Early Triassic.However, it should be pointed out that the environment changed from an oceanic to an arc setting in the Late Permian with the development of intermediate-acid volcanic rocks, including andesite and rhyolite [7].

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Located 38 km east-southeast of Panshi city, central Jilin Province, the Hongqiling copper-nickel deposit is the largest and economically most important deposit in the eastern CAOB, with explored reserves of 271,720 tons of Ni and 6,9940 tons of Cu [21].The initial 187Os/188Os ratio is 0.295 ± 0.019 (MSWD = 1.14).



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