Genesis of the Dongtangzi Zn-Pb Deposit of the Fengxian–Taibai Ore Cluster in West Qinling, China: Constraints from Rb-Sr and Sm-Nd Geochronology, and In Situ S-Pb Isotopes

Author:

Hu Qiaoqing1,Wang Yitian1ORCID,Chen Shaocong2,Wei Ran1,Liu Xielu3,Liu Junchen4,Wang Ruiting5,Gao Weihong5,Wang Changan6,Tang Minjie6,Wu Wentang6

Affiliation:

1. MNR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China

2. MNR Key Laboratory for Polar Science, Polar Research Institute of China, Ministry of Natural Resources, Shanghai 200136, China

3. Beijing Institute of Exploration Engineering, Beijing 100083, China

4. Collaborative Innovation Center for Exploration of Nonferrous Metal Deposits and Efficient Utilization of Resources by the Province and Ministry, Guilin University of Technology, Guilin 541004, China

5. Northwest Nonferrous Geological and Mining Group Co., Ltd., Xi’an 710054, China

6. Baoji No.717 Corps Limited of Northwest Nonferrous Geological and Mining Group, Baoji 721015, China

Abstract

The large Dongtangzi Zn-Pb deposit is located in the southwest of the Fengxian–Taibai (abbreviated as Fengtai) ore cluster in the west Qinling orogen. The origin of the deposit is controversial, positing diverse genesis mechanisms such as sedimentary-exhalative (SEDEX), sedimentary-reformed, and epigenetic-hydrothermal types. This study combines systematic ore geology observations with high-precision Rb-Sr and Sm-Nd ages of 211 Ma and in situ S-Pb isotopes to constrain the timing and origin of mineralization. In situ S-Pb isotopic studies show that the sulfide ores display a narrow range of δ34S values from 1.1‰ to 10.2‰, with 206Pb/204Pb, 207Pb/204Pb, and 208Pb/204Pb ratios of 18.07 to 18.27, 15.64 to 15.66, and 38.22 to 38.76, respectively. On the other hand, pyrites of the sedimentary period and the granite porphyry dike have δ34S values ranging from 15.8 to 21.4‰ and from 2.1 to 4.3‰ (with 206Pb/204Pb ratios of 18.09 to 18.10, 207Pb/204Pb ratios of 15.59 to 15.61, and 208Pb/204Pb ratios of 38.17 to 38.24), respectively. The above-mentioned S-Pb isotopic compositions indicate that the metallic materials involved in ore formation originated from a mixture of Triassic magmatic hydrothermal fluid and metamorphic basement. By integrating the regional geology, mineralization ages, and S-Pb isotopic studies, we propose that the Dongtangzi Zn-Pb deposit is the product of epigenetic hydrothermal fluid processes, driven by Late Triassic regional tectono-magmatic processes.

Funder

Ministry of Science and Technology of China

National Sciences Foundation of China

Fundamental Research Funds for the Central Public Welfare Research Institutes

Publisher

MDPI AG

Reference101 articles.

1. The main metal deposits metallogenic series and exploration direction in Feng-Tai Ore Cluster Region, Shaanxi Province;Wang;West. Geol.,2007

2. Analysis on ore-controlling factors and prospecting potential of the Baguamiao-type gold deposits in Fengtai area, Shaanxi;Li;Miner. Resour. Geol.,2008

3. Geological Characteristics and Prospecting Direction of Lead-Zinc Mine in Shaanxi Qiandongshan-Dongtangzi;Wu;Gansu Metall.,2016

4. Characteristics and geological significance of the strawberry-like sulfide mineral in the lead-zinc deposit of Qiandongshan and Yinmusi in Shaanxi province;Zhang;Geol. Prospect.,1986

5. Wang, J.L., He, B.C., Li, J.Z., and He, D.R. (1996). Qinling-Type Lead-Zinc Ore Deposits in China, Geological Publishing House. (In Chinese with English Abstract).

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3