Hongdi Pan

Chang'an University

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Ping Shen

Suzhou Polytechnic Institute of Agriculture

Changhao Li

Chinese Academy of Sciences

Chong Cao

North China University of Science and Technology

Eleonora Seitmuratova

Satbayev University

Haoxuan Feng

Institute of Geology and Geophysics

Yuanchao Shen

Guangzhou Medical University

Wenguang Li

PLA Army Engineering University

Jinheng Sun

China Earthquake Administration

Ge Ma

University of Chinese Academy of Sciences

Heping Zhu

Agricultural Research Service

Cooperative Institutions

Chinese Academy of Sciences

Institute of Geology and Geophysics

University of Chinese Academy of Sciences

China University of Geosciences

China Geological Survey

Satbayev University

Xinjiang Institute of Ecology and Geography

Zhejiang University

Bureau of Geology and Mineral Exploration and Development of Guizhou Province

University of Tasmania

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Geochemical characteristics and significance of apatite from the Koktokay pegmatitic rare-metal deposit, Altay, Xinjiang

Acta Petrologica Sinica (2021)

Ying-Xiong Bai Ping Shen Chong Cao Hongdi Pan Changhao Li

磷灰石可以记录和保存岩浆和热液活动的信息。可可托海伟晶岩型稀有金属矿床磷灰石发育,为研究该矿床伟晶岩成岩成矿过程提供了优良的条件。已有对可可托海伟晶岩型稀有金属矿床磷灰石的研究集中在其稀土元素特征,较少讨论其对伟晶岩成岩成矿过程的制约。本文选取可可托海伟晶岩型稀有金属矿床富矿伟晶岩脉(3号脉)和相对贫矿伟晶岩脉(1号、2b号和3a号脉)中的磷灰石作为研究对象,进行磷灰石岩相学和地球化学研究。岩相学分析表明,磷灰石主要与钠长石、石英、白云母、锰铝榴石等伴生。EPMA分析显示,磷灰石F含量为3.67%~4.41%,Cl含量小于0.67%,较低的Cl含量表明伟晶岩熔体出溶的流体Cl含量较低;大部分磷灰石MnO含量为4.67%~8.71%,但2b号脉磷灰石MnO含量变化较大(1.23%~14.28%),这是由于2b号脉磷灰石具有分带结构,暗示其遭受后期热液作用,促使磷灰石溶解-再沉淀,导致MnO含量发生较大变化。LA-ICP-MS分析显示,贫矿伟晶岩脉磷灰石的稀土元素含量较低(<180×10^-6);相反,富矿伟晶岩脉磷灰石的稀土元素含量较高(>700×10^-6),并具有明显的四分组效应(TE_1-3平均值为1.7)。1号脉和3a号脉磷灰石均显示轻稀土元素富集,反映其形成过程中有含Cl热液的参与。3号脉磷灰石显示强烈Eu负异常和Ce正异常,而2b号脉磷灰石显示强烈Ce负异常和中等Eu负异常,这种Eu、Ce异常的差异可能与岩浆-热液阶段大量流体出溶密切相关。磷灰石的沉淀将导致热液中HF含量的降低,促使磷灰石周围铌钽矿结晶和Nb、Ta进入磷灰石中。可见,在伟晶岩形成过程中,磷灰石并非保持稳定,其分带结构和主微量成分变化记录了后期热液活动,暗示后期热液活动对伟晶岩的成矿具有重要作用。;Apatite records and preserves the information of magmatic and hydrothermal processes. There is much apatite in Koktokay pegmatitic rare-metal deposit, which provides excellent conditions for studying the diagenetic and metallogenic process of pegmatite in the deposit. Previous studies on apatite from the deposit have focused on the characteristics of rare earth elements, and less on its constraints on the diagenesis and mineralization of pegmatite. In this paper, apatite from rare-metal enriched pegmatite (No.3) and relatively barren pegmatite (No.1, No.2b, and No.3a) of the Koktokay pegmatitic rare-metal deposit is selected as the research object to study their petrography and geochemistry. Petrographic analysis shows that the apatite is mainly associated with albite, quartz, muscovite, and spessartine. EPMA analysis shows that the F content of apatite is 3.67%~4.41%, and the Cl content is less than 0.67%. The low Cl content indicates that the Cl content of the fluid exsolved from pegmatite melt is low; The MnO content of most apatite is 4.67%~8.71%, but the MnO content of apatite from No.2b pegmatite changes greatly (1.23%~14.28%), which is due to the zoning structure of the apatite, suggesting that it was affected by later hydrothermal process, which promoted apatite dissolution and reprecipitation, resulting in great changes in MnO content. LA-ICP-MS analysis shows that the rare earth element content of apatite from the relatively barren pegmatite is low (<180×10^-6); On the contrary, the content of rare earth elements in apatite of the enriched pegmatite is high (>700×10^-6) and has obvious REE tetrad effect (the average value of TE_1-3 is 1.7). The apatite from No.1 and No.3a pegmatite shows enrichment of light rare earth, reflecting the participation of bearing Cl hydrothermal fluid in their formation. The apatite of No.3 pegmatite shows extreme negative Eu anomaly and positive Ce anomaly, while the apatite of No.2b pegmatite shows strong negative Ce anomaly and medium negative Eu anomaly. The difference between Eu and Ce anomalies may be closely related to a large number of fluids dissolved by the melt in the magmatic-hydrothermal stage. The precipitation of apatite leads to the decrease of HF content in hydrothermal fluid, promotes the crystallization of columbite-tantalite group mineral around apatite, and the entry of Nb and Ta into apatite. Therefore, apatite is not stable during the formation of pegmatite, and its zoning structure and changes of major and trace composition record the later hydrothermal process, suggesting that the process plays a vital role in the mineralization of pegmatite.

Pegmatite

Muscovite

10.18654/1000-0569/2021.09.15

Cite

Citations (6)

Two geodynamic–metallogenic events in the Balkhash (Kazakhstan) and the West Junggar (China): Carboniferous porphyry Cu and Permian greisen W-Mo mineralization

International Geology Review (2013)

Ping Shen Hongdi Pan Wenjiao Xiao Xuanhua Chen Seitmuratova Eleonorad

This study focuses on the geochronology and elemental and Nd isotopic geochemistry of the Baogutu Cu deposit and the newly discovered Suyunhe W-Mo deposit in the southern West Junggar ore belt (Xinjiang, China), as well as the geology of the newly discovered Hongyuan Mo deposit in the southern West Junggar ore belt and the Kounrad, Borly, and Aktogai Cu deposits and the East Kounrad, Zhanet, and Akshatau W-Mo deposits in the North Balkhash ore belt (Kazakhstan). The aim is to compare their petrogenesis, tectonic setting, and mineralization and to determine the relationship between the southern West Junggar and North Balkhash ore belts. Based on our newly acquired results, we propose that the Kounrad, Borly, Aktogai, and Baogutu deposits are typical porphyry Cu deposits associated with calc-alkaline magmas and formed in a Carboniferous (327–312 Ma) subduction-related setting. In contrast, the East Kounrad, Zhanet, Akshatau, Suyunhe, and Hongyuan deposits are quartz-vein greisen or greisen W-Mo or Mo deposits associated with alkaline magmas and formed in an early Permian (289–306 Ma) collision-related setting. Therefore, two geodynamic–metallogenic events can be distinguished in the southern West Junggar and North Balkhash ore belts: (1) Carboniferous subduction-related calc-alkaline magma – a porphyry Cu metallogenic event – and (2) early Permian collision-related alkaline magma – a greisen W-Mo metallogenic event. The North Balkhash ore belt is part of the Kazakhstan metallogenic zone, which can be extended eastward to the southern West Junggar in China.

Greisen

Petrogenesis

10.1080/00206814.2013.792500

Cite

Citations (64)

The Ore‐forming Fluid Study of Suyunhe Porphyry Mo Deposit, West Junggar, Xinjiang

Acta Geologica Sinica - English Edition (2014)

Shihua Zhong Ping Shen Hongdi Pan Guoping Zheng Yuhong Yan

Geological survey

10.1111/1755-6724.12374_79

Cite

Citations (4)

Geochronology and isotope geochemistry of the Baogutu porphyry copper deposit in the West Junggar region, Xinjiang, China

Journal of Asian Earth Sciences (2011)

Ping Shen Yuanchao Shen Hongdi Pan Xian‐Hua Li Lian‐Hui Dong

Diorite

Molybdenite

Geochronology

Breccia

δ34S

10.1016/j.jseaes.2011.11.025

Cite

Citations (91)

Methane origin and oxygen-fugacity evolution of the Baogutu reduced porphyry Cu deposit in the West Junggar terrain, China

Mineralium Deposita (2015)

Ping Shen Hongdi Pan

Diorite

Mineral redox buffer

Anhydrite

Magmatic water

10.1007/s00126-015-0580-5

Cite

Citations (32)

Country-rock contamination of magmas associated with the Baogutu porphyry Cu deposit, Xinjiang, China

Lithos (2013)

Ping Shen Hongdi Pan

Diorite

Felsic

10.1016/j.lithos.2013.07.019

Cite

Citations (47)

Mineral chemistry of chlorite in different geologic environments and its implications for porphyry Cu ± Au ± Mo deposits

Ore Geology Reviews (2022)

Changhao Li Ping Shen Yong Zhao Pei Li Lejun Zhang

• Mg, Fe, Al, and Ti are most different between chlorite PCDs and chlorite Barren . • Three diagrams are proposed to distinguish chlorite PCDs from chlorite Barren . • Redox states and formation temperatures result in the differences. In the porphyry Cu ± Au ± Mo deposits (PCDs), chlorite and its mineral assemblages are indicators for exploration. However, chlorite found in PCDs may have different origins because it is a common mineral in different geological environments. Therefore, it is necessary to identify the differences in the composition of PCDs-related chlorites (chlorite PCDs ) and chlorite formed in other geological environments (chlorite Barren ). Here, based on occurrences, mineral assemblages, and compositions of the chlorites from thirty PCDs and barren areas (including geothermal systems, chlorite GSs ; low-grade metamorphic rocks, chlorite LGMRs ; sedimentary rocks, chlorite SRs ), we used principal component analysis (PCA) and random forest (RF) methods to find discrimination approaches. Results show that chlorite PCDs and chlorite Barren differ in the Fe, Mg, Al, Ti, and possibly Mn, K, and Ca elements. Based on these differences, wt.% ratios of (MgO + 100*TiO 2 )/(FeO + 100*CaO), TiO 2 /(CaO + K 2 O + Na 2 O), Al 2 O 3 /(100*K 2 O*CaO), MgO/(100*CaO*Na 2 O), SiO 2 /100(CaO + K 2 O), and FeO/100TiO 2 and diagrams of Fe/(Fe + Mg) (a.p.f.u. ratio) vs TiO 2 /(Na 2 O + K 2 O + CaO) (wt.% ratio), Fe/(Fe + Mg) (a.p.f.u. ratio) vs MgO/(100*Na 2 O*CaO) (wt.% ratio), and Fe/(Fe + Mg) (a.p.f.u. ratio) vs SiO 2 /Al 2 O 3 (wt.% ratio) are proposed to distinguish chlorite PCDs from chlorite Barren . These discrimination approaches have better results in distinguishing chlorite PCDs from chlorite LGMRs and chlorite SRs but are less effective for chlorite GSs . By comparing the physicochemical conditions, the highly oxidized conditions and high temperature of the ore-related intrusions and fluid properties result in the compositional differences between chlorite PCDs and chlorite Barren . Although further researches remain to be done, this study provides potential approaches for identifying chlorite PCDs based on major elements.

10.1016/j.oregeorev.2022.105112

Cite

Citations (6)

Discovery of iron orebodies in the Dahalajunshan Formation carbonate rocks in the Beizhan volcanic-hosted iron deposit, Xinjiang and its genetic significance

Acta Petrologica Sinica (2022)

Hongdi Pan Ping Shen Changhao Li Haoxuan Feng MA HuaDong

新疆西天山备战铁矿床出露下石炭统大哈拉军山组海相火山喷发-沉积碎屑岩夹碳酸盐岩建造, 前人认为矿区铁矿体赋存在中-基性火山岩中, 主要为岩浆-热液成因。本文作者对矿区进行了剖面测量和钻孔岩芯编录, 发现在碳酸盐岩地层中也发育有铁矿体, 该矿体由纹层状、浸染状、条带状和块状矿石组成, 前三种矿石组成贫矿体, 呈层状分布于碳酸盐岩中; 块状矿石组成富矿体, 呈脉状产出于不同围岩界面及裂隙中。对矿区的碳酸盐岩进行了岩相学、地球化学和同位素分析, 认为区内碳酸盐岩包括灰岩、硅质灰岩、白云岩、钙质白云岩和大理岩等, 含矿岩石主要是白云岩。碳酸盐岩的碳同位素δ¹³C_V-PDB值(3.0‰~5.2‰)变化小, 而氧同位素δ¹⁸O_V-PDB值(-21.7‰~-12.3‰)变化大, 与成岩作用及热液活动有关; 灰岩和硅质灰岩的U/Th(< 0.5)、Ni/Co(2.99~7.59)和V/Cr(1.37~2.32)比值相对较低, δCe(0.85~1.02)异常不明显, 硅质灰岩中含有较高的SiO₂(>15%)和Al₂O₃(>3%), 其中还有硅质岩夹层, 指示其沉积环境为受陆源碎屑混染作用影响的酸性、氧化环境。白云岩的U/Th(>0.5)、Ni/Co(6.01~-18.36)、V/Cr(2.06~5.38)比值适中, δCe(0.83~0.98)具有负异常, 岩石含有硫化物和有机质, 很少有陆源碎屑混染, 指示白云岩沉积环境为碱性、还原环境, 利于Fe²⁺的溶解及铁胶体沉淀成矿。矿相学和矿物化学研究表明, 碳酸盐岩中的纹层状和浸染状矿石的磁铁矿分别是铁胶体后期转化和黄铁矿被交代的产物, 磁铁矿具有富镁低硅的特点, 为沉积成因; 而条带状和块状矿石中的磁铁矿是重结晶作用和热液交代及充填作用所致, 磁铁矿具有富钙和铝的特点, 为热液成因。因此, 备战铁矿床的碳酸盐岩中发育的铁矿体为沉积成因, 有后期热液成矿作用的叠加, 可归为沉积-热液叠加成因。

10.18654/1000-0569/2022.10.13

Cite

Citations (0)

Two fluid sources and genetic implications for the Hatu gold deposit, Xinjiang, China

Ore Geology Reviews (2015)

Ping Shen Hongdi Pan Heping Zhu

δ34S

Magmatic water

Arsenopyrite

Ore genesis

10.1016/j.oregeorev.2015.03.008

Cite

Citations (33)

Quartz textures, trace elements, fluid inclusions, and in-situ oxygen isotopes from Aktogai porphyry Cu deposit, Kazakhstan

American Mineralogist (2024)

Changhao Li Ping Shen Reimar Seltmann Di Zhang Hongdi Pan

Abstract The Paleozoic Aktogai Group in Kazakhstan ranks among the 30 largest porphyry Cu deposits globally. The Aktogai deposit is the largest one in the Aktogai Group and is characterized by intensive potassic alteration where the dominant orebody occurred. However, its mineralization processes still need to be clarified. Our investigation focused on the texture, trace elements, fluid inclusions, and in situ oxygen isotopes of the quartz from the ore-related tonalite porphyry and associated potassic alteration at Aktogai to trace the deposit’s mineralization processes. Ti-in-quartz thermobarometry, fluid inclusion microthermometry, and geological characteristics indicate that the ore-related magma at Aktogai originated from a shallow magma chamber at ∼1.9 ± 0.5 kbar (∼7.2 ± 1.9 km) and intruded as the tonalite porphyry stock at ∼1.7–2.4 km. The potassic alteration and associated Cu mineralization comprise five types of veins (A1, A2, B1, B2, and C) and two types of altered rocks (biotite and K-feldspar). Among them, nine types of hydrothermal quartz were identified from early to late: (1) VQA1 in A1 veins and RQbt in biotite-altered rocks; (2) VQA2 in A2 veins and RQkfs in K-feldspar altered rocks; (3) VQB1 in B1 veins and VQB2E in B2 veins; and (4) quartz associated with Cu-Fe sulfides (VQB2L, VQBC, and VQC) in B and C veins. Titanium contents of the quartz decreased, while Al/Ti ratios increased from early to late. Fluid inclusion microthermometry and mineral thermometers reveal that VQA1, RQbt, and hydrothermal biotite formed under high-temperature (∼470–560 °C) and ductile conditions. VQA2, RQkfs, VQB1, and hydrothermal K-feldspar formed during the transition stage from ductile to brittle, with temperatures of ∼350–540 °C. The rapid decrease in pressure from lithostatic to hydrostatic pressure led to fluid boiling and minor involvement of meteoric water (∼11–14%) in the mineralizing fluid. Extensive recrystallization in VQA1 to VQB1 was associated with repeated cleavage and healing of the intrusion. With cooling, K-feldspar decomposition and hydrolysis increased. Fluid cooling and water-rock reactions resulted in the co-precipitation of Cu-Fe sulfides, white mica, chlorite, VQBC, and VQC at temperatures of ∼275–370 °C and brittle conditions. The Paleozoic Aktogai deposit exhibits formation depths and fluid evolution processes similar to Mesozoic and Cenozoic porphyry Cu deposits worldwide. The close association between Cu-Fe sulfides and later quartz formed under intermediate-temperature conditions at Aktogai implies that Cu-Fe sulfides are not precipitated under early high-temperature conditions in porphyry Cu deposits.

TRACE (psycholinguistics)

10.2138/am-2023-8931

Cite

Citations (0)