Age and compositions of garnet in a magnesian skarn Au-Cu deposit, Tibet, implications for ore-fluid evolution

Nan Chao,Xin Chen, Jianhui Wu, Xiaoyi Wang, Yibing Lin,Decai Lin,Jianbing Li, Ye Gu,Miao Li, Junleng Lu,Hao Lin,Youye Zheng

Ore Geology Reviews（2023）

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摘要

•The age of garnets (90–89 Ma) matched the age of Au-Cu mineralization (88.6 ± 0.6 Ma);•The Galale deposit is a typical Mg-skarn Au-Cu deposit;•The REE content of garnets was influenced by metasomatism and ore-forming fluids;•The high fO2 of fluids in early stages is vital for Au-Cu enrichment.

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关键词

Garnet,In situ U–Pb dating,Oxygen fugacity,Mg-skarn,Metasomatism,Galale

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