Tracing black shales in the source of a porphyry Mo deposit using molybdenum isotopes

doi:10.1130/G51240.1

IOCAS-IR

	Tracing black shales in the source of a porphyry Mo deposit using molybdenum isotopes
	Xue, Qiqi 1,2,3; Zhang, Lipeng 1,2; Chen, Shuo 1,2; Guo, Kun 4; Li, Tao 5; Han, Zhong 6; Sun, Weidong1,2,3
	2023-07-01
发表期刊	GEOLOGY
ISSN	0091-7613
卷号	51 期号:7 页码:688-692
通讯作者	Zhang, Lipeng(zhanglipeng@qdio.ac.cn) ; Chen, Shuo(shuochen@qdio.ac.cn)
摘要	Porphyry Mo deposits are important suppliers of molybdenum for industrial applications, but the origin and source of metals in these deposits remain debated. Here, we present Mo isotope data for Miocene mineralized porphyritic monzogranites (MPMs) and Paleocene barren biotite monzogranites and tuffs (BMTs) from the Bangpu porphyry Mo (Cu) deposit in the Gangdese metallogenic belt. The results show that the MPMs display radiogenic Sr and Pb isotopes and elevated delta Mo-98/95 (relative to NIST SRM 3134; +0.07 parts per thousand-1.2 parts per thousand) and Mo contents, which exceed the range of the depleted mantle. These characteristics cannot be attributed to surface weathering, hydrothermal alteration, magmatic differentiation, or partial melting but rather reflect the incorporation of Mo from black shales into their magma sources, as evidenced by the significant correlations between delta Mo-98/95 and epsilon(Nd)(t) and aluminum saturation index (ASI) values. In contrast, the BMTs display lower Mo and delta Mo-98/95 values than the mineralized samples, and their delta Mo-98/95 values display no correlations with radiogenic isotopes or ASI values. The contrasting characteristics of mineralized and barren samples provide strong evidence that the addition of black shales played an important role in the formation of the Bangpu porphyry Mo deposit. Our study thus establishes a possible link between porphyry Mo deposits and organic-rich sediments and highlights the great potential of Mo isotopes in studying porphyry Mo deposits.
DOI	10.1130/G51240.1
收录类别	SCI
语种	英语
资助项目	Laoshan Laboratory[LSKJ202204100] ; National Natural Science Foundation of China[42176087] ; National Natural Science Foundation of China[41906050] ; Taishan Scholar Program of Shandong[ts201712075] ; Innovation and Creation Plan ; Youth Innovation Promotion Association, Chinese Academy of Sciences[2021206]
WOS研究方向	Geology
WOS类目	Geology
WOS记录号	WOS:001068779700015
出版者	GEOLOGICAL SOC AMER, INC
WOS关键词	CU DEPOSIT ; BANGPU ; ROCKS ; CHEMOSTRATIGRAPHY ; FRACTIONATION ; GEOCHEMISTRY ; TETHYAN ; TIBET
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/181766
专题	中国科学院海洋研究所
通讯作者	Zhang, Lipeng; Chen, Shuo
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Laoshan Lab, Lab Marine Geol, Qingdao 266237, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Laoshan Lab, Ctr Isotope Geochem & Geochronol, Qingdao 266237, Peoples R China 5.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China 6.Chengdu Univ Technol, Inst Sedimentary Geol, Chengdu 610059, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Xue, Qiqi,Zhang, Lipeng,Chen, Shuo,et al. Tracing black shales in the source of a porphyry Mo deposit using molybdenum isotopes[J]. GEOLOGY,2023,51(7):688-692.
APA	Xue, Qiqi.,Zhang, Lipeng.,Chen, Shuo.,Guo, Kun.,Li, Tao.,...&Sun, Weidong.(2023).Tracing black shales in the source of a porphyry Mo deposit using molybdenum isotopes.GEOLOGY,51(7),688-692.
MLA	Xue, Qiqi,et al."Tracing black shales in the source of a porphyry Mo deposit using molybdenum isotopes".GEOLOGY 51.7(2023):688-692.