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Summary Zircons from a granodiorite porphyry at the Wushan copper deposit in the Lower Changjiang Metallogenic Belt, east central China, were dated using a Cameca IMS 1270 secondary ion mass spectrometer (SIMS); their chemical compositions and Hf isotopes were analyzed using a JEOL JX A8800 electron microprobe (EMPA) and a Neptune LA-MC-ICP-MS, respectively. The U–Pb dating of zircon reveals two age...
SummaryThe NWSE-trending Yulong porphyry CuMo ore belt, situated in the Sanjiang0 area of eastern Tibet, is approximately 400km long and 35 to 70km wide. Complex tectonic and magmatic processes during the Himalayan epoch have given rise to favorable conditions for porphyry-type CuMo mineralization. Porphyry masses of the Himalayan epoch in the Yulong ore belt are distributed in groups along regional...
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