Yongmei Zhang

Anhui Agricultural University

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Xuexiang Gu

China University of Geosciences (Beijing)

Yiwei Peng

Chengdu University of Technology

Jialin Wang

National University of Defense Technology

Shaohua Zheng

State Key Laboratory of Geological Processes and Mineral Resources

Zhanlin Ge

China University of Geosciences (Beijing)

Jingchi Xu

China Geological Survey

Zheng Luo

Xiamen University

Bingqin Li

Southwest University

Ruiping Liu

Nanjing Medical University

Weizhi Chen

First Affiliated Hospital of Fujian Medical University

Cooperative Institutions

China University of Geosciences (Beijing)

Chinese Academy of Sciences

University of Chinese Academy of Sciences

Chengdu University of Technology

China Geological Survey

Chinese Academy of Medical Sciences & Peking Union Medical College

Ministry of Natural Resources

Sun Yat-sen University

Southwest Petroleum University

Research Institute of Petroleum Exploration and Development

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Ore-forming process of the Huijiabao gold district, southwestern Guizhou Province, China: Evidence from fluid inclusions and stable isotopes

Journal of Asian Earth Sciences (2014)

Yiwei Peng Xuexiang Gu Yongmei Zhang Li Liu Wu Chengyun

δ34S

Ore genesis

10.1016/j.jseaes.2014.06.022

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Citations (49)

Petrogenesis, tectonic setting and metallogenic potential of the Late Paleozoic and Late Mesozoic granitoids in the Central Great Xing'an Range, NE China

Journal of Geochemical Exploration (2025)

Yu Zhao Shuyi Dong Yongmei Zhang Huihui Yong Jie Zhang

Petrogenesis

10.1016/j.gexplo.2025.107714

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The First Discovery of Nagyágite in China and Its Genetic Significance

Kuangwu xuebao. (2024)

Zhanlin Ge Yongmei Zhang Xuexiang Gu Guang Fan Yongbao Gao

叶碲金矿[Pb ₃(Pb,Sb) ₃S ₆](Au,Te) ₃是一种极为罕见的Pb、Sb、Au硫碲化物,1845年以发现地特兰西瓦尼亚 Nagyág地区(如今的罗马尼亚Săcărîmb地区)正式命名为"nagyágite",至今在我国尚未报道。北秦岭杨斜金矿床是陕西省近年来勘查的一处典型脉状金矿,本文以新识别的叶碲金矿为研究对象,利用矿相显微鉴定、激光拉曼光谱、电子探针及元素面扫描等方法,查明我国首次发现的叶碲金矿矿物学特征,探讨叶碲金矿的成因及其与岩浆热液的关系。研究结果表明,叶碲金矿呈半自形-他形粒状产于石英-细粒黄铁矿-自然金-多金属硫化物阶段,与黄铁矿、闪锌矿、黝铜矿、碲铅矿及方铅矿等共生。化学组成为 w(Pb)值为55.10%~56.61%、 w(Sb)值为7.31%~7.67%、 w(S)值为10.39%~11.63%、 w(Au)值为10.42%~11.24%、 w(Te)值为3.47%~4.21%,计算的平均化学式为[Pb _3.00(Pb _1.81Sb _1.09) _2.90S _6.12](Au _0.98Te _1.95) _2.93,属于化学成分稳定且接近理想组成的正常叶碲金矿,存在微量的Sb替代Pb、S替代Te。北秦岭杨斜叶碲金矿形成于中低温 (160~200 °C)、低硫逸度(–16.5<log fS ₂<–14.0)和相对高碲逸度 (–15.2<log fTe ₂<–11.2)的富CO ₂-H ₂O-NaCl岩浆热液体系,成因可能与含金碲矿脉的富贱金属与Sb组分的再活化有关。

10.3724/j.1000-4734.2024.44.038

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Forecasting the yield of natural gas in China

Energy Sources Part B Economics Planning and Policy (2017)

Yongmei Zhang

The exponential smoothing methods with the grey model and the generalized Wengshi model have been introduced in the present article. Two new methods for forecasting the yield of natural gas in China have also pointed out based on the exponential smoothing method with the grey model and the generalized Wengshi model. The experimental results show that both models can predict the yield of natural gas in China and the experimental data are in agreement with the quantitatively analytical conclusions drawn from the calculated data. This proves that two types of new models can be used to forecast the yield of natural gas. It results in good economic and social benefits in China.

Exponential Smoothing

Smoothing

10.1080/15567249.2013.768721

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Mineralization and genesis of the orogenic gold system in the Kalamaili area, East Junggar, Xinjiang, northwestern China

Geological Society of America Bulletin (2023)

Xuexiang Gu Yongmei Zhang Zhanlin Ge Weizhi Chen

There are many lode gold deposits and occurrences in the Kalamaili area of the East Junggar, northwestern China. However, little is known about the specifics of ore geology and geochemistry of these gold deposits because of very limited exploration and research work in this region. Field geology, fluid inclusions, stable isotopes, trace elements in quartz, and hydrothermal zircon U-Pb dating are combined in this study to constrain the nature and source of ore fluids, the timing of mineralization, and the mechanism of gold precipitation in Kalamaili. The gold deposits are confined to a narrow zone between two regional NW- to NWW-trending shear zones and are structurally controlled by secondary, high-angle faults of the shears. The orebodies occur in the Middle Devonian and Lower Carboniferous, zeolite to lower greenschist facies clastic sedimentary and pyroclastic rocks. Gold mineralization occurs as auriferous quartz-sulfide ± tourmaline veins/veinlets and disseminated ores in the immediate altered wall rocks. The ore mineralogy is relatively simple and dominated by quartz with minor to trace amounts of sulfides (pyrite and arsenopyrite), sericite, calcite, and native gold. Quartz of various generations contains three types of fluid inclusions, including predominant H2O-CO2-NaCl inclusions and subordinate H2O-NaCl inclusions and CO2 ± CH4 ± N2 inclusions. The mineralizing fluid is uniformly characterized by a medium to high homogenization temperature (mostly 240−330 °C), low salinity (typically <6 wt% NaCl equivalent), reduced, and CO2-rich-H2O-NaCl ± CH4 fluid. The hydrogen and oxygen isotope data (δ18OH2O = +5.6‰ to +14.3‰, δDH2O = −99‰ to −62‰) indicate a metamorphic origin for the mineralizing fluid. The majority of sulfide δ34S values range between 0‰ and +10‰, indicative of a largely sedimentary rock reservoir of sulfur in the ore-forming fluids. Geochemically, the auriferous quartz is characterized by low concentrations of most trace elements including Ti, Al, Li, Ge, and Sb. Laser ablation−inductively coupled plasma−mass spectrometry U-Pb isotope dating of hydrothermal zircons from the auriferous quartz vein yielded a weighted mean 206Pb/238U age of ca. 313 Ma. Phase separation of ore fluids and fluid-rock interaction are suggested as key mechanisms for the gold precipitation. Integrated geological and geochemical evidence indicates that formation of the orogenic gold system in Kalamaili is related to the transition from compressional to transcurrent deformation during the Late Carboniferous. Target gold exploration in this region should focus on the northeast side of the Kalamaili fault zone, where there exist suitable structural and stratigraphic trap sites with high fluid flux and potential gold mineralization.

Magmatic water

Sericite

Greenschist

Arsenopyrite

Ore genesis

Hypogene

10.1130/b36650.1

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YOU CAN HAVE YOUR CAKE AND EAT IT TOO——DISCUSSION ON ANIMATION COLLEGE COURSES

Journal of Chaohu College (2009)

Yongmei Zhang

In the main purpose of training animation professional experts,animation college curriculum must include traditional hand-drawn animation courses and modern computer animation.courses.We must arrange the order of the courses reasonably and closely,also we must find out our own features and locate our position according to our advantages and disadvantages.

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新疆北山三峰山铜金矿区花岗岩体锆石U-Pb年代学、地球化学及其地质意义

徐劲驰 XU Jing-chi 顾雪祥 Xuexiang Gu 王佳琳

对新疆三峰山铜金矿区内出露的花岗岩体进行了年代学和地球化学研究，旨在查明岩石成因及其构造背景，并探讨岩浆活动与成矿作用的关系。三峰山花岗岩体主要由二长花岗岩和花岗细晶岩组成，锆石U-Pb同位素定年结果显示，二者加权平均年龄分别为（462.3±2.4）Ma和（461.8±2.7）Ma，表明岩体侵位于中奥陶世，为加里东期岩浆活动产物。在地球化学组成上，三峰山花岗岩体总体呈现准铝质-过铝质高钾钙碱性的I型花岗岩特征，同时相对富集Th、U、LREE和大离子亲石元素（LILE）等，亏损Nb、P、Ti等高场强元素（HFSE）。此外，岩体具有较高的Sr含量，较低的Y和Yb含量，较高的Sr/Y值（31~108，>20），属于C型埃达克岩。岩浆起源于加厚的铁镁质下地壳的部分熔融，源岩可能为加厚地壳底部的角闪榴辉岩。岩石的形成与古亚洲洋向塔里木板块的俯冲作用有关，构造环境为俯冲带背景的岛弧环境。

10.19658/j.issn.1007-2802.2018.37.031

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Temporal and spatial separation mechanisms of the Cu and Mo mineralization in the Dabate porphyry deposit, Western Tianshan, Xinjiang, China

Ore Geology Reviews (2022)

Shaohua Zheng Xuexiang Gu Yongmei Zhang Jialin Wang Yiwei Peng

Dabate deposit is a typical porphyry Cu-Mo deposit in the Western Tianshan, Xinjiang, China. Both the Cu and Mo mineralization are mainly associated with intrusion of rhyolite porphyry. Distinguishing from typical porphyry deposits, the Cu mineralization and Mo mineralization are separated from each other on both the temporal and spatial scales. The Cu orebodies are mainly hosted in the contact zone between the rhyolite porphyry and Tuosiku'ertawu Formation and predominantly occur as fluorite-arsenopyrite-Cu-sulfides ± K-feldspar ± quartz veins (Cu-1 stage), whereas the Mo orebodies are mostly hosted in the inner part of the rhyolite porphyry and are typically presented as Mo-2 stage quartz-molybdenite veins (external Cu and internal Mo). Total homogenization temperatures (Th, L-V) for boiling fluid inclusion assemblage of the Mo-2 stage occurred at 302 to 358 °C, with corresponding salinities of 1.4 to 38.1 wt% NaCleqv. H-O isotope data indicate that the Mo mineralization fluids were mainly derived from magmatic water. The non-boiling fluids of the Cu-1 stage originated from magmatic fluids and meteoric water, which were characterized by high temperature (323 to 379 °C) and low salinity (2.6 to 5.9 wt% NaCleqv) as well as Cu, As, and volatile enrichment. These features are different from the initial magmatic fluids of this deposit, indicating that the Cu mineralization may occur before the Mo mineralization (early Cu and late Mo) and the magmatic fluid components of the Cu-1 stage should be derived from the condensation of the low-salinity vapor generated by boiling of the hydrothermal fluids (351 to 405 °C; 1.8 to 40.1 wt% NaCleqv) for the earliest Mo-1 stage barren quartz veins. The positive δ34S values (5.5 to 9.8‰) of sulfides indicate that the sulfur in the ore-forming fluids was derived from magma and country rocks. The subtle change in fluid conditions from the high temperature (peak range 340 to 360 °C), alkaline, and slightly more oxidized of the Cu-1 stage to high temperature (peak range = 320 to 340 °C), more reduced, and acidic of the Mo-2 stage gave rise to the temporal separation of Cu and Mo mineralization. The Cu, As, and volatiles (e.g., CO2, HF), preferentially partitioned into the vapor phase, were highly enriched in Cu ore-forming fluids, whereas Mo mineralization fluids contained the majority of Mo with strong preference for the brine phase. Therefore, the spatial separation of the Cu and Mo mineralization could be attributed to selectively fractionating between the vapor phase and hypersaline liquid of the Cu and Mo metals during the process of fluid boiling.

Molybdenite

Magmatic water

Sericite

10.1016/j.oregeorev.2022.104924

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Scenario experiment on the categorization of achievement goals.

Yongmei Zhang Chunyan Guo Fang Ping

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Chinese Peasants' Social Status as Least Advantaged Class and It's Policy Root——Concurrently Discuss the Justice of Equalization of Public Service Between Urban-rural Areas

Huanan Nongye Daxue xuebao (2009)

Yongmei Zhang

According to Rawls' justice theory,the realization of social distributive justice depends on promoting and guaranteeing the interest of the least advantaged class.Referring to economic interest,social interest and political interest,peasants are the biggest group of the least advantaged class in China.There are profound policy roots which lead to peasants' social status,such as unjust distribution of income,fortune,freedom and opportunity.The strategy of equalization of public service between urban-rural areas aims to change peasants's least advantaged status and make social distributive justice come back.Also it has brightly justicial merit which is helpful to the benign development of the society.

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