The Characteristics of Lead Isotope Compositions and Fluid Inclusions of Yutang Pb-Zn Deposit, Western Hunan Province, China and Their Geological Significance

1 Geology of Ore Field and Ore Deposit and Sampling The Yutang Pb--Zn deposit mainly dominated by lower Cambrian Qingxudong Formation limestone and located in southeastern margin of Yangtze block in regional structure, is part of the Huayuan Pb-Zn ore field situated in the western Hunan Province, China （WHPC）. Orebodies are controlled by NE-trending Zhangjiajie-Huayuan and NNE-trending Malichang deep-faults and constrained by NE-trending Guzhang anticlinorium and Sangzhi synclinorium （Fig. 1）.