Origin of the Dashuigou independent tellurium deposit at Qinghai-Xizang Plateau:constraints from the light stable isotopes C,O,and H

扫码查看

原文链接

万方数据

外文摘要：By studying the light isotopic compositions of carbon,oxygen,and hydrogen,combined with previous research results on the ore-forming source of the deposit,the authors try to uncover its metallogenic origin.The δ18O and δ13C isotope signatures of dolomite samples vary between 10.2 and 13.0‰,and between-7.2 and-5.2‰,respectively,implying that the carbon derives from the upper mantle.δD and δ18O of quartz,biotite,and muscovite from different ore veins of the deposit vary between-82 and-59‰,and between 11.6 and 12.4‰,respectively,imply-ing that the metallogenic solutions are mainly magmatic.According to the relevant research results of many isotope geologists,the fractionation degree of hydrogen isotopes increases as the depth to the Earth's core increases,and the more differentiated the hydrogen isotopes are,the lower their values will be.In other words,mantle-derived solutions can have extremely low hydrogen isotope values.This means that the δD‰ value-134 of the pyrrhotite sample num-bered SD-34 in this article may indicate mantle-derived ore-forming fluid of the deposit.The formation of the Dashuigou tellurium deposit occurred between 91.71 and 80.19 Ma.

外文关键词：

Carbonoxygenand hydrogen isotopesOriginIndependent tellurium depositThe Qinghai-Xizang Plateau

作者：

Jianzhao Yin、Yuhong Chao、Haoyu Yin、Hongyun Shi、Shoupu Xiang

展开 >

作者单位：

Wuhan Institute of Technology,Wuhan 430074,China

College of Earth Sciences,Jilin University,Changchun 130061,China

Ganzhongnan Institute of Geology and Mineral Exploration,Nanchang 330002,China

Guinea Westfield Mining Company-Sarlu,Jinzhong 031300,China

Orient Resources Ltd.,Richmond,B.C.V7E 1M8,Canada

Silvercorp Metals Inc.,Beijing 100027,China

展开 >

出版年：

2024

DOI：

10.1007/s11631-023-00665-z

地球化学学报(英文版)

中国科学院地球化学研究所

地球化学学报(英文版)

影响因子：0.33

ISSN：2096-0956

年,卷(期)：2024.43(2)