Wenbao Zheng

Beijing Institute of Geology for Mineral Resources

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Juxing Tang

Chinese Academy of Geological Sciences

Pan Tang

Yangtze University

Qiufeng Leng

China Geological Survey

Bin Lin

Chinese Academy of Geological Sciences

Bingli Liu

Chengdu University of Technology

Shuai Ding

Hebei University of Engineering

Jing Qi

Chinese Academy of Sciences

Jennifer McKinley

Queen's University Belfast

Yang Song

Chinese Academy of Geological Sciences

Wu Chunneng

Chengdu University of Technology

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Chengdu University of Technology

China University of Geosciences (Beijing)

Chinese Academy of Geological Sciences

Chinese Academy of Sciences

Ministry of Natural Resources

China Geological Survey

Beijing Institute of Geology for Mineral Resources

Université Laval

Nanjing University

Southwest Jiaotong University

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Geology of the Jiama porphyry copper–polymetallic system, Lhasa Region, China

Ore Geology Reviews (2015)

Wenbao Zheng Juxing Tang Kanghui Zhong Lijuan Ying Qiufeng Leng

Hornfels

Polymetallic replacement deposit

Prospecting

Metallogeny

10.1016/j.oregeorev.2015.11.024

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Citations (83)

Advances in Research of Mineral Chemistry of Magmatic and Hydrothermal Biotites

Acta Geologica Sinica - English Edition (2019)

Pan Tang Yuchuan Chen Juxing Tang Ying Wang Wenbao Zheng

Biotite is an important hydrated ferromagnesian silicate mineral in igneous rocks and porphyry deposits. The determination of chemical compositions of biotite plays an important role in both igneous petrology and ore forming processes. This paper summarizes research results of magmatic and hydrothermal biotites exemplified by the Lakange porphyry Cu–Mo deposit and the Qulong porphyry Cu deposit in the Gangdese porphyry–skarn metallogenic belt, Tibet. Biotite mineral chemistry can provide critical insights into classification, geothermometer, geothermobarometry, oxygen fugacity, petrogenesis and tectonic setting, evaluating magmatic‐hydrothermal process by halogen and halogen fugacity ratios, and distinguishing between barren and mineralized rocks. Biotite provides the latest mineralogical evidence on metallogenic prognosis and prospecting evaluation for porphyry Cu polymetallic deposits or magmatic hydrothermal deposits.

Mineral redox buffer

Petrogenesis

10.1111/1755-6724.14395

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Citations (11)

Fluid Evolution and Ore‐forming Processes of the Jiama Cu Deposit, Tibet: Evidence from Fluid Inclusions

Acta Geologica Sinica - English Edition (2018)

Xiaofeng Yao Jiajun Liu Juxing Tang Wenbao Zheng Zhi Zhang

Abstract The Jiama deposit is a large copper deposit in Tibet. Mineralization occurs in three different host rocks: skarn, hornfels and porphyry. A detailed fluid inclusion study was conducted for veins in the different host rocks to investigate the relationship between fluid evolution and ore‐forming processes. Based on examination of cores from 36 drill holes, three types of veins (A, B and D) were identified in the porphyries, four types (I, II, III and IV) in the skarn, and three (a, b and c) in the hornfels. The crosscutting relationships of the veins and that of the host rocks suggest two hydrothermal stages, one early and one late stage. Fluid inclusions indicate that the Jiama hydrothermal fluid system underwent at least two episodes of fluid boiling. The first boiling event occurred during the early hydrothermal stage, as recorded by fluid inclusions hosted in type A veins in the porphyries, type a veins in the hornfels, and wollastonite in the skarns. This fluid boiling event was associated with relatively weak mineralization. The second boiling event occurred in the late hydrothermal stage, as determined from fluid inclusions hosted in type B and D veins in the porphyries, type I to IV veins in the skarns, and type b and c veins in the hornfels. This late boiling event, together with mixing with meteoric water, was responsible for more than 90% of the metal accumulation in the deposit. The first boiling only occurred in the central part of the deposit and the second boiling event took place across an entire interlayered structural zone between hornfels and marble. A spatial zoning of ore‐elements is evident, and appears to be related to different migration pathways and precipitation temperatures of Cu, Mo, Pb, Zn, Au and Ag.

Hornfels

10.1111/1755-6724.13498

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Citations (3)

Geological Features of the Jiama Porphyry Deposit in Tibet

Acta Geologica Sinica - English Edition (2014)

Qiufeng Leng Juxing Tang Wenbao Zheng Bin Lin Pan Tang

Metallogeny

Mineral resource classification

Prospectivity mapping

10.1111/1755-6724.12374_25

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Citations (1)

Construction of the Three‐dimensional Model for Jiama Deposit, Tibet, and its Significance in Geological Study

Acta Geologica Sinica - English Edition (2014)

Pan Tang Juxing Tang Wenbao Zheng Xiaoqian TANG Qiufeng Leng

10.1111/1755-6724.12374_54

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Citations (1)

Geology, geochronology, and exploration of the giant Jiama porphyry copper system (11Mt), Tibet, China: A review

China Geology (2023)

Bin Lin Juxing Tang Pan Tang Wenbao Zheng Yang Song

Jiama, with more than 11 Mt of copper metal, is the largest porphyry-skarn copper system in the Gangdese metallogenic belt, Tibet, China, creating ideal conditions for deciphering the origin of porphyry ores in a collision setting. Despite massive studies of the geology, chronology, petrogenesis, and ore-related fluids and their sources in Jiama, there is a lack of systematic summaries and reviews of this system. In contrast to traditional porphyry copper systems in a subduction setting, recent studies and exploration suggest that the Jiama deposit includes porphyry-type Mo-Cu, skarn-type Cu polymetallic, vein-type Au and manto orebodies. This paper reviews the latest studies on the geology, chronology, petrogenesis, fluid inclusions, and isotopic geochemistry (hydrogen, oxygen, sulfur, and lead) of the Jiama deposit. Accordingly, a multi-center complex mineralization model was constructed, indicating that multi-phase intrusions from the same magma reservoir can form multiple hydrothermal centers. These centers are mutually independent and form various orebodies or are superimposed on each other and form thick, high-grade orebodies. Finally, a new comprehensive exploration model was established for the Jiama porphyry copper system. Both models established in this study help to refine the theories on continental-collision metallogeny and porphyry copper systems.

Metallogeny

Petrogenesis

Geochronology

10.31035/cg2023031

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Citations (9)

Petrogeochemistral Characteristics of the Acid Intrusive Rocks in the Zhaxikang Deposit, Xizang (Tibet)

Acta Geologica Sinica - English Edition (2014)

Pan Tang Juxing Tang Wenbao Zheng Qiufeng Leng Bin Lin

10.1111/1755-6724.12368_24

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Citations (3)

Exploration indicators of the Jiama porphyry–skarn deposit, southern Tibet, China

Journal of Geochemical Exploration (2022)

Wenbao Zheng Bingli Liu Juxing Tang Jennifer McKinley Mark Cooper

10.1016/j.gexplo.2022.106982

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Citations (10)

Mineral chemistry of magmatic and hydrothermal biotites from the Bangpu porphyry Mo (Cu) deposit, Tibet

Ore Geology Reviews (2019)

Pan Tang Juxing Tang Bin Lin Liqiang Wang Wenbao Zheng

Mineral redox buffer

Fugacity

10.1016/j.oregeorev.2019.103122

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Citations (28)

Zircon U–Pb and Molybdenite Re–Os Ages of the Lakange Porphyry Cu–Mo Deposit, Gangdese Porphyry Copper Belt, Southern Tibet, China

Resource Geology (2016)

Qiufeng Leng Juxing Tang Wenbao Zheng Bin Lin Pan Tang

Abstract The Lakange porphyry Cu–Mo deposit within the Gangdese metallogenic belt of Tibet is located in the southern–central part of the eastern Lhasa block, in the Tibetan Tethyan tectonic domain. This deposit is one of the largest identified by a joint Qinghai–Tibetan Plateau geological survey project undertaken in recent years. Here, we present the results of the systematic logging of drillholes and provide new petrological, zircon U–Pb age, and molybdenite Re–Os age data for the deposit. The ore‐bearing porphyritic granodiorite contains elevated concentrations of silica and alkali elements but low concentrations of MgO and CaO. It is metaluminous to weakly peraluminous and has A/CNK values of 0.90–1.01. The samples contain low total REE concentrations and show light REE/heavy REE (LREE/HREE) ratios of 17.51–19.77 and (La/Yb) N values of 29.65–41.05. The intrusion is enriched in the large‐ion lithophile elements (LILE) and depleted in the HREE and high field‐strength elements (HFSE). The ore‐bearing porphyritic granodiorite yielded a Miocene zircon U–Pb crystallization age of 13.58 ± 0.42 Ma, whereas the mineralization within the Lakange deposit yielded Miocene molybdenite Re–Os ages of 13.20 ± 0.20 and 13.64 ± 0.21, with a weighted mean of 13.38 ± 0.15 Ma and an isochron age of 13.12 ± 0.44 Ma. This indicates that the crystallization and mineralization of the Lakange porphyry were contemporaneous. The ore‐bearing porphyritic granodiorite yielded zircon εHf( t ) values between −3.99 and 4.49 (mean, −0.14) and two‐stage model ages between 1349 and 808 Myr (mean, 1103 Myr). The molybdenite within the deposit contains 343.6–835.7 ppm Re (mean, 557.8 ppm). These data indicate that the mineralized porphyritic granodiorite within the Lakange deposit is adakitic and formed from parental magmas derived mainly from juvenile crustal material that partly mixed with older continental crust during the evolution of the magmas. The Lakange porphyry Cu–Mo deposit and numerous associated porphyry–skarn deposits in the eastern Gangdese porphyry copper belt (17–13 Ma) formed in an extensional tectonic setting during the India–Asia continental collision.

Porphyritic

Molybdenite

Lile

10.1111/rge.12091

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Citations (12)