Metallogenic controls on the granite-related W-Sn deposits in the Hunan-Jiangxi region, Ch

Metallogenic controls on the granite-related W-Sn

deposits in the Hunan-Jiangxi region, China: evidence from zircon trace element geochemistry

Yuannan Feng;Tingguang Lan;Lichuan Pan;Tingting Liu;Shaohua Dong

【期刊名称】《中国地球化学学报（英文版）》 【年(卷),期】2019(038)004

【摘要】The Nanling Range in South China is well known for its rich granite-related W-Sn deposits.To elucidate the controls of different granite-related W-Sn metallogenesis in the region,we chose five representative

orerelated

granites

(Yanbei,Mikengshan,Tieshanlong,Qianlishan,and Yaogangxian intrusions) in the Hunan-Jiangxi region,and studied their magmatic zircon ages and trace element geochemistry.Our new zircon data showed the differences in ages,temperatures and oxygen fugacity of the ore-forming magmas.Zircon U-Pb ages of the Yanbei and Mikengshan intrusions are characterized by 142.4 ± 2.4 and 143.0 ± 2.3 Ma,respectively,whereas the Tieshanlong and Qianlishan intrusions are 159.5 ± 2.3 and 153.2±3.3 Ma,respectively.The Sn-related intrusions were younger than

the W-related intrusions.The Ti-in-zircon

thermometry showed that there was no systematic difference between the Sn-related Yanbei (680-744 ℃) and Mikengshan (697-763 ℃) intrusions and the W-related Tieshanlong (730-800 ℃),Qianlishan (690-