Ore Genesis and Formation Age of the Gaogangshan <scp>M</scp>o Deposit, <scp>H</scp>eilongjiang Province, <scp>NE C</scp>hina

Hao, Yujie; Ren, Yunsheng; Yang, Qun; Duan, Ming-Xin; Sun, Qi; Fu, Lichun; Li, Chao

doi:10.1111/rge.12065

Cited by 15 publications

(5 citation statements)

References 31 publications

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“…Large Mo deposits such as Fu'anbu, Jide, Dashihe, and Daheishan, together with the Chang'anbu deposit, belong to the Lesser Xing'an Range–Zhangguangcai Range belts and have similar characteristics in terms of metallogenesis and mineralization. Re–Os ages of molybdenites from the Daheishan and Dashihe deposits are 186.7 ± 5.0 and 168.2 ± 3.2 Ma, respectively, consistent with the emplacement of adamellite of the Fu'anbu deposit at 170 Ma (Chen et al, ; Hao et al, ; Wu, Jahn, Wilde, & Sun, ; Zhang et al, ). These consistent ages suggest that diagenesis and metallogenesis of the Chang'anbu deposit and other Mo deposits occurred during the early Yanshanian.…”

Section: Discussionsupporting

confidence: 60%

The Early Jurassic Chang'anbu porphyry Cu–Mo deposit in Northeastern China: Constraints from zircon U–Pb geochronology and H–O–S–Pb stable isotopes

Ren

Zhang³

et al. 2017

Geological Journal

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Central Jilin is tectonically subordinate to the Lesser Xing'an Range–Zhangguangcai Range polymetallic metallogenic belt, an important region for Cu–Mo prospecting in NE China. Dozens of large‐scale molybdenum deposits, including Fu'anbu, Chang'anbu, Jide, and Dashihe, have been recently discovered in Central Jilin, whereas porphyry Cu or Cu–Mo deposits have not been found to date. One such example of an intracontinental porphyry Cu–Mo deposit is the Chang'anbu Cu–Mo deposit in Shulan, Jilin Province, hosted in early Yanshanian rocks. Here in this contribution, we described detailed geology based on our field observation and conducted a comparative study on the metallogenic epoch and the ore‐forming sources of the Chang'anbu Cu–Mo deposit by using zircon U–Pb dating and H–O–S–Pb stable isotopes. We propose that the Chang'anbu deposit is rare in the Lesser Xing'an Range–Zhangguangcail Range metallogenic belt and differs from other porphyry deposits that consist solely of Mo, indicating a unique mechanism of metallogenesis. Zircon U–Pb ages indicate emplacement of a granite pluton which is the main metallogenetic rock body during the Early Jurassic (182.10 ± 1.20 Ma). The pluton is spatially and temporally associated with Cu–Mo mineralization and led to large‐scale porphyry Cu–Mo mineralization during the early Yanshanian. Sulphur, Pb, H, and O isotope data suggest that magma generated by subduction of the Paleo‐Pacific oceanic crust was the main ore‐forming source of this deposit (206Pb/204Pb = 18.046–18.734; Pb207/Pb204 = 15.502–15.655; δ34S = 0.3–2‰; δDV–SMOW = −102.2–93.4‰; δ18OV–SMOW = 9.1–11.6‰). The Chang'anbu porphyry Cu–Mo deposit is representative of large‐scale polymetallic metallogenic events in Central Jilin that resulted from magmatism related to crust and mantle melting during the early Yanshanian.

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Section: Discussionsupporting

confidence: 60%

The Early Jurassic Chang'anbu porphyry Cu–Mo deposit in Northeastern China: Constraints from zircon U–Pb geochronology and H–O–S–Pb stable isotopes

Ren

Zhang³

et al. 2017

Geological Journal

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“…We imagine that a Jurassic stock may be under the Liushengdian intrusions and it is genetically related to the deposit; nevertheless, there is no proof or now discovery can demonstrate. More recently, Hao et al () reported a U–Pb isochron age of 259.9 ± 2.0 Ma for a granite porphyry of the Gaogangshan Mo deposit in the LXR, and Zhang () obtained a U–Pb age of 254.9 ± 3.1 Ma for a granodiorite of the Houdaomu Mo deposit in the MJP. In addition, Late Permian granitoids have also been recognized within the MJP in recent years, including the 248 Ma Dayushan, the 251 Ma Dahongshilazi, the 252 Ma Anyi, the 253 Ma Liushuhe, the 259 Ma Qingyang, the 253 Ma Erhedian, and the 252 Ma Balanhe plutons (Sun, Wu, & Gao, ; Wu et al, ; Zou, ).…”

Section: Discussionmentioning

confidence: 99%

Geochronology, geochemistry, and zircon Hf isotopes of the Mo‐bearing granitoids in the eastern Jilin‐Heilongjiang provinces, NE China: Petrogenesis and tectonic implications

et al. 2017

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In order to investigate their precise geochronological framework, petrogenesis, and tectonic implications, whole‐rock major and trace elements, together with zircon U–Pb and Hf isotope data, are reported for the Mo‐bearing granitoids from the eastern Jilin‐Heilongjiang provinces in the eastern segment of the Central Asian Orogenic Belt. Zircon U–Pb dating by LA–ICP–MS yields crystallization ages for the Liushengdian monzogranite porphyry (252.2 ± 1.6 Ma), the Luming monzogranite porphyry (197.1 ± 1.6 Ma), and the Baoshan granodiorite (164.4 ± 1.9 Ma) and quartz diorite (165.2 ± 1.7 Ma), respectively. This zircon U–Pb data, combined with previous ages, indicate that the eastern Jilin‐Heilongjiang provinces is dominated by 2 stages of ore‐related granitic magmatism and associated Mo mineralization, that is, Late Permian (259–252 Ma) and Early‐Middle Jurassic (200–165 Ma). Geochemically, these Mo‐bearing granitoids have high SiO2 (60.78–74.67 wt.%) and K2O (2.85–6.23 wt.%), low MgO (0.17–2.85 wt.%) and CaO (0.66–4.38 wt.%) contents, with A/NCK and δEu values of 0.87–1.08 and 0.19–1.07, respectively; we infer that they belong to high‐K calc‐alkaline series and are metaluminous to peraluminous in nature. They are characterized by enrichment in large ion lithophile elements and light rare earth elements, and weak depletion in high field strength elements and heavy rare earth elements, consistent with the geochemical signatures of subduction‐related genesis. In addition, in situ Hf isotopic analyses of zircons from 4 dated samples reveal that they have εHf(t) values of −0.4 to +10.3, with 2‐stage model ages varying from 551 to 1,261 Ma, indicating that they probably originated from the partial melting of a dominantly Mesoproterozoic–Neoproterozoic crustal source. On the basis of the geochemical data and regional geological investigations, we propose that the formation of the Late Permian Mo‐bearing granite was related to the subduction of the Paleo‐Asian Ocean plate, whereas the generation of the Early‐Middle Jurassic Mo‐bearing granitoids was associated with the subduction of the Paleo‐Pacific Plate beneath the Eurasian continent.

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“…The dominant regional structures are oriented either in the northeast direction or in the nearly north-south direction and include the Dunhua-Mishan fault, Yitong-Yilan fault and Jiayin-Mudanjiang fault. It is believed that the distributions of igneous rocks and deposits were controlled at large by these dominant regional structures [6,8,[39][40][41][42][43][44]. In the LXR, the representative deposits are (1) Cuiling, Gaosongshan, Luming and Huojihe porphyry Mo deposits; (2) Gaosongshan, Yongxin and Dong'anm epithermal gold deposits; and (3) Ergu, Baoshan and Cuihongshan skarn-hosted deposits.…”

Section: Geological Backgroundmentioning

confidence: 99%

Numerical Modeling of the Hydrothermal Metallogenic Mechanism Associated with the Ergu Pb-Zn Deposit, Heilongjiang, China: An Example of Pore-Fluid Convection Controlled Mineralization

Liu,

Zhao

2023

Minerals

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Skarn-hosted deposits are commonly recognized as the consequence of magma intrusion within the Earth’s upper crust. The Ergu Pb-Zn deposit can be regarded as a typical skarn-hosted deposit in the hydrothermal ore-forming system within the central Lesser Xing’an Range (LXR), Heilongjiang, China. Although extensive studies were conducted to understand the ore-forming system associated with the Ergu Pb-Zn deposit through using the traditional geoscience methods, the ore-forming process involved in this deposit has not been justified in a strictly scientific manner to date. In this paper, the hydrothermal ore-forming process of the Ergu Pb-Zn deposit is computationally simulated through using the dual length-scale approach associated with the finite element method (FEM). The related computational simulation results have demonstrated that: (1) the pore-fluid convection provides continuous ore-forming fluid and material sources for the Ergu Pb-Zn deposit at the quartz-Pb-Zn sulfide stage; (2) the convective flow of the pore fluid is the main dynamic mechanism, which controls the temperature, chemical species and pore-fluid velocity distributions in the Ergu Pb-Zn deposit; (3) the localized structure plays a key role in controlling the localized pore-fluid flow pattern, which can further control the location and formation of the orebody grade in the Ergu Pb-Zn deposit; (4) the dual length-scale approach associated with the FEM is very useful in dealing with the computational simulation of the hydrothermal ore-forming mechanism involved in the Ergu Pb-Zn deposit.

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Ore Genesis and Formation Age of the Gaogangshan Mo Deposit, Heilongjiang Province, NE China

Cited by 15 publications

References 31 publications

The Early Jurassic Chang'anbu porphyry Cu–Mo deposit in Northeastern China: Constraints from zircon U–Pb geochronology and H–O–S–Pb stable isotopes

The Early Jurassic Chang'anbu porphyry Cu–Mo deposit in Northeastern China: Constraints from zircon U–Pb geochronology and H–O–S–Pb stable isotopes

Geochronology, geochemistry, and zircon Hf isotopes of the Mo‐bearing granitoids in the eastern Jilin‐Heilongjiang provinces, NE China: Petrogenesis and tectonic implications

Numerical Modeling of the Hydrothermal Metallogenic Mechanism Associated with the Ergu Pb-Zn Deposit, Heilongjiang, China: An Example of Pore-Fluid Convection Controlled Mineralization

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