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The magmatic-hydrothermal-mineralized center of Bairong-Bairongxi porphyry Cu-Mo district at the Gangdese belt, southern Tibet
Zou XinYu1,2,3; Qin KeZhang1,2,3; Li GuangMing1,2,3; Zhang XiPing4; Zhao JunXing1,3; Zhang PeiPei5; Zhang XiaNan1,3; Zhang JinShu6
2019
Source PublicationACTA PETROLOGICA SINICA
ISSN1000-0569
Volume35Issue:7Pages:2026-2044
AbstractThe Bairong-Bairongxi porphyry Cu-Mo district is located in the middle part of Gangdese porphyry copper belt in southern Tibet, China. It has sparse mineralization, complicated magmatic intrusions, no central alteration zonation and no typical ore-related porphyry. Therefore, 'where is the magmatic-hydrothermal-mineralized center of Bairong-Bairongxi' is becoming the key of further studies. To address this issue, based on detailed geological survey and drills records, combined with the observation of microscope, zircon U-Pb dating and molybdenite Re-Os dating analysis, we concluded the following points: (1) The Bairong-Bairongxi is not two separated ore districts but belongs to an united porphyry mineralization system; (2) The magmatic sequences include biotite monzonitic granite, monzonitic granite porphyry (13.9 +/- 0.2Ma), granodiorite porphyry (13.8 +/- 0.2Ma), dacite porphyry (12.6 +/- 0.4Ma) and lamprophyre (11.1 +/- 0.2Ma); (3) The Re-Os age of molybdenite is from 13.35 +/- 0.19Ma to 13.82 +/- 0.20Ma; (4) The magmatic-hydrothermal-mineralized center is in its central regions; (5) Most of drillings are located in the argillic alteration zone but deep drillings revealed medium-high temperature veinlets, indicating the alteration has its origin in the deep. As mentioned above, Bairong-Bairongxi is in the top of a Cu-Mo porphyry system with clear magmatic-hydrothermal-mineralized center, and has great potential in Cu-Mo mineralization in the deep. This work gives an overview picture of Bairong-Bairongxi porphyry Cu-Mo district and is helpful for further exploration and studies.
KeywordBrong-Bairongxi porphyry Cu-Mo district Zircon U-Pb age Molybdenite Re-Os age Hydrothermal alteration Magmatic intrusion series Miocene Gangdese porphyry copper belt
DOI10.18654/1000-0569/2019.07.06
WOS KeywordZIRCON U-PB ; LHASA TERRANE ; GEOCHRONOLOGICAL CONSTRAINTS ; ISOTOPIC COMPOSITIONS ; HF ISOTOPES ; ROCKS ; DEPOSIT ; ND ; SUBDUCTION ; ORIGIN
Language英语
WOS Research AreaGeology
WOS SubjectGeology
WOS IDWOS:000491151100006
PublisherSCIENCE PRESS
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Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/93876
Collection矿产资源研究院重点实验室
Corresponding AuthorQin KeZhang
Affiliation1.Chinese Acad Sci, Key Lab Mineral Resources, Inst Geol & Geophys, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
4.China Copper Co Ltd, Beijing 100082, Peoples R China
5.Yunnan Copper Co Ltd, Kunming 650000, Yunnan, Peoples R China
6.Tibet Univ, Lassa 850000, Peoples R China
First Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zou XinYu,Qin KeZhang,Li GuangMing,et al. The magmatic-hydrothermal-mineralized center of Bairong-Bairongxi porphyry Cu-Mo district at the Gangdese belt, southern Tibet[J]. ACTA PETROLOGICA SINICA,2019,35(7):2026-2044.
APA Zou XinYu.,Qin KeZhang.,Li GuangMing.,Zhang XiPing.,Zhao JunXing.,...&Zhang JinShu.(2019).The magmatic-hydrothermal-mineralized center of Bairong-Bairongxi porphyry Cu-Mo district at the Gangdese belt, southern Tibet.ACTA PETROLOGICA SINICA,35(7),2026-2044.
MLA Zou XinYu,et al."The magmatic-hydrothermal-mineralized center of Bairong-Bairongxi porphyry Cu-Mo district at the Gangdese belt, southern Tibet".ACTA PETROLOGICA SINICA 35.7(2019):2026-2044.
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