Established in 2007, the Key Laboratory of Mineralization and Resource Evaluation of the Ministry of Land and Resources belongs to the Institute of Mineral Resources, Chinese Academy of Geological Sciences, and its orientation is applied basic research. The laboratory has 67 regular staff and more than 65,438+00 professional laboratories. It has a series of advanced geochemical analysis and testing instruments to study the composition (isotopes and elements), structure, chronology and physical and chemical conditions of diagenetic minerals, as well as a variety of advanced equipment to carry out geophysical and remote sensing information processing and visual mineral resources evaluation. It has undertaken a number of scientific research projects such as the National "973" Plan, the National Science and Technology Support Plan, international cooperation projects, natural science foundation projects, provincial and ministerial projects (including geological survey projects).
The key laboratory of mineralization and resource evaluation of the Ministry of Land and Resources focuses on the formation process, distribution law and exploration and evaluation technology of mineral resources. It is characterized by studying the metallogenic background, metallogenic process, metallogenic regularity, deposit model and exploration and evaluation technology as a whole. Its advantage lies in that relying on the Institute of Mineral Resources of Chinese Academy of Geological Sciences and China Geological Survey, the laboratory can organically combine the theoretical research of ore-prospecting with exploration and evaluation, so that the research results can be quickly tested and improved in practical application.
(2) Important scientific research achievements 20 13
1. Compilation of metallogenic maps of large and super-large deposits in the world and study and evaluation of global metallogenic regularity
"1∶ 250,000 World Large-scale Deposit Mineralization Mapping and Global Metallogenic Regularity Research and Evaluation" is a geological survey project of China Geological Survey and the first international cooperation project of mineral resources mapping approved by the World Geological Map Committee in the new century. Through more than 8 years' work, the following main achievements have been made:
(1) put forward an objective and practical global classification standard for large and super-large deposits, screened 445 large and super-large deposits from the global 1285 major deposits, and established an internationally authoritative global database for large and super-large deposits.
(2) With the World Geological Map Committee as the international cooperation platform, the digital1:250,000 world large-scale metallogenic map was compiled for the first time, which filled the gaps at home and abroad.
(3) According to the characteristics of continental cracking and proliferation, ocean opening and closing, ocean-continent interaction and its geological evolution, combined with the global geological tectonic background and metallogenic characteristics, four major metallogenic domains and 2 1 giant metallogenic belt are divided in the global continent for the first time, and new understandings of global metallogenic unity, metallogenic particularity in different regions, metallogenic bias and abnormal mineralization of large and super-large deposits are put forward, which deepens the research on global metallogenic laws.
(4) On the basis of mapping research, the main types of mineral resources in the world and the mineral resources in all continents are evaluated strategically, and the strategic problems of mineral resources in China are studied and discussed.
This achievement provides an important strategic reference and scientific guidance for China to formulate the overall implementation plan of the strategic action of prospecting breakthrough, organize the exploration and development of overseas mineral resources, deploy international cooperation in geological survey, and solve the problem of mineral resources in China from a global perspective. The World Geological Map Committee will soon publish1:250,000 World Metallogenic Map of Large and Super-large Deposits (English version), which will expand the application scope of this achievement to the global geological community and have world guiding significance for developing global metallogeny and searching for large and super-large deposits.
This achievement won the second prize of 20 13 land and resources science and technology.
2. Study on the main metal deposit models in China?
According to the present situation and development trend of international deposit model research, combined with the basic characteristics of metal deposits in China, the main deposit models in China have been established or improved by further summarizing and perfecting the achievements of deposit research and exploration in China in the past 20 years. According to international standards, typical deposit models and ore enrichment scale models such as tungsten, tin and rare polymetallic deposits related to acid granite, porphyry-skarn copper, iron and molybdenum deposits related to intermediate acid granite, magmatic copper-nickel sulfide deposits related to mafic-ultramafic rocks, massive sulfide copper-lead-zinc deposits related to submarine jet, lead-zinc deposits in Mississippi valley and major gold deposits have been developed for the first time. Completed the compilation of 26 groups of11deposit models, and edited the Introduction to Deposit Models in China. According to the needs of mineral resources evaluation and prospecting exploration in China, the types, characteristics and prospecting exploration of major foreign deposits are compiled comprehensively and systematically, and the characteristics, metallogenic mechanism, distribution law, formation background, deposit scale, ore concentration area scale and regional scale of major international deposits are introduced. Including orogenic gold deposits, Carlin gold deposits, epithermal gold deposits, porphyry skarn copper-molybdenum deposits, lead-zinc deposits in Mississippi River basin, sedimentary jet lead-zinc deposits, volcanic massive sulfide lead-zinc-copper polymetallic deposits, magmatic copper-nickel sulfide deposits, iron oxide copper-gold deposits, black rock series deposits, sandstone-type uranium deposits, lateritic nickel deposits and lateritic bauxite deposits. According to the stage and characteristics of Mesozoic large-scale mineralization in eastern China, the main metallogenic belts (regions) and representative ore fields or deposits are selected. Based on the previous work and the content of this study, the deposit models of deposits, ore concentration areas and regional scales are systematically put forward, and an atlas of Mesozoic metal deposits in eastern China is compiled to discuss the formation process of various deposits. Finally, the Mesozoic metallogenic environment in eastern China is summarized and the deposit models of different types of deposits are constructed, with a view to further developing the prospecting and exploration work in China.
This achievement won the second prize of 20 13 annual land and resources science and technology award.
3. The national mineral resources potential evaluation has achieved a series of fruitful results?
After eight years' efforts, the project of "National Mineral Resources Potential Assessment" has fully completed all tasks and achieved a series of fruitful results, providing an important basis for formulating the national resource strategy, implementing the strategic action of prospecting breakthrough, the national geological and mineral security project and the deployment of mineral exploration in the Twelfth Five-Year Plan.
The main achievements of the research project on important minerals and regional metallogenic regularity in China are as follows: ① The full coverage of 1, 2, 3 and 4 grade metallogenic belts has been realized for the first time, 23 types of mineral prediction have been put forward and 388 types of mineral prediction have been determined; ② The single mineral metallogenic belt was divided for the first time, a series of maps were compiled, and the deposit list and database were established. Perfecting the regional metallogenic model and pedigree of each metallogenic province; Trained a group of young backbone and 19 doctors and postdoctoral fellows, published 8 monographs and 168 papers.
The work results have played an effective guiding role in the exploration and evaluation of Dachang tin polymetallic deposit in Guangxi, Taoxikeng tungsten deposit in Jiangxi, Pangushan tungsten deposit in Guizhou and Dazhuyuan bauxite deposit, and achieved good prospecting results. In the study of regional metallogenic regularity, a new metallogenic model of "five layers+basement" is put forward.
4. Establishment of mineral deposit model and comprehensive geological information mineral prediction method system of national important mineral concentration prediction project?
On the basis of drawing lessons from the experience of mineral prediction at home and abroad, the national important mineral total prediction project innovatively puts forward a mineral prediction method system with comprehensive geological information of deposit model, and on this basis, it delineates nearly 50,000 different levels of prediction target areas and metallogenic prospect areas, and optimizes provincial-level and national-level metallogenic prospect areas. The potential resources of each target area and metallogenic prospect area are predicted and evaluated. The potential distribution map of single mineral resources, the distribution map of distant scenic spots and the exploration deployment map are compiled. The prediction of the total amount of important minerals in China is a complex systematic project with a huge task, covering the whole region. Compared with previous and foreign mineral prediction, this prediction and evaluation is at the national leading level in geological data level, mineral prediction method and prediction breadth. This prediction will have a far-reaching impact on China's resource prediction and evaluation and mineral planning.
5. Important progress has been made in deep exploration technology and experimental research?
After five years' efforts, the three-dimensional exploration technology and experimental research project of deep mineral resources has achieved fruitful results. A number of important discoveries have been made in the exploration of lithospheric structure, deep diagenesis and mineralization process and three-dimensional structure of ore concentration areas in the middle and lower reaches of the Yangtze River, which has deepened the understanding of the formation of giant metallogenic belts and ore concentration areas:
(1) Seismological evidence of lithospheric detachment and mantle-derived magma underplating in the metallogenic belt in the middle and lower reaches of the Yangtze River was found, which confirmed the existence of multi-stage magmatic activity and explained the dynamic reasons of diagenesis and mineralization in the giant metallogenic belt.
(2) Reveal the fine structure and deformation history of the crust in the metallogenic belt. It is found that the upper crust is composed of thrust fold structural systems on multiple detachment layers. Most extensional basins in the later period were reactivated on the basis of thrust faults.
(3) The properties of important structural zones such as the Tancheng-Lujiang fault and the Yangtze River structural zone are defined. It is found that the Tanlu fault is a thrust nappe structure and the Zhangbaling uplift is a nappe structure. "Yangtze deep fault" is a compound thrust structure formed in the intracontinental orogenic stage and evolved into an extensional depression in the extensional stage; Lujiang-Fanchang-Huzhou fault is an extensional detachment structural belt, and its west side may be connected with Xinyang-Huoshan fault.
(4) Obtaining the three-dimensional structure of Tongling and Luzong ore concentration areas, revealing the spatial distribution of important rock masses and ore-controlling geological bodies, deepening the understanding of mineralization and providing important information for deep prospecting.
6. Important progress has been made in the theory, prediction and evaluation of potash mineralization?
(1) Rift Valley Potassium Formation Model. From Paleozoic to late Mesozoic to Cenozoic, the tectonic environment of potash mineralization changed from a stable giant epicontinental sea in craton to a rift basin. The rift tectonic subsidence formed a well-sealed basin, accompanied by a large number of volcanic activities, which brought rich deep ore-forming materials in the form of hot springs. Some cracks also communicate with the ocean and are supplemented by seawater. The coupling of the above-mentioned structural and material conditions with arid climate leads to the deposition and mineralization of potassium salt. The "two stages and three processes" model of potassium formation in rift zone is put forward. The first stage, surface salt lake-solar energy; The second stage, buried-magmatic heat energy; "Three processes of potassium formation": the first is evaporation and deposition, the second is deposition and leaching, and the third is metamorphism and transformation (Figure 35 and Figure 36) (Journal of the Earth, 2013,34 (5), the full text has been downloaded 82,644 times).
Fig. 35 diagram of potassium formation model in rift basin
(2) Study on the hydrochemistry of Tarim and the source of potassium in Lop Nur. The research group * * * collected the data and obtained the data of 537 water samples. According to statistical analysis, the background value of SO _ 4/Cl of river water in Tarim Basin is 2.75, which is more than twice as high as that of river water (0.88) and sea water (0. 18) and 18 times respectively. The background value of river water K/Cl in Tarim basin is 0.06, which is more than twice that of seawater (0.02). This shows that the geological background of Tarim Basin is rich in K and SO _ 4 and poor in Cl, which may be the geochemical background of huge glauberite deposition, potassium salt enrichment and relative chlorine loss in Lop Nur Salt Lake (Boying et al., 20 13). It is also found that chloride-type salt springs are widely distributed in Tarim Basin except for the evaporation and weathering of rocks in the surrounding mountainous areas, which indicates that CaCl2 _ 2 _ 2 water from the deep part of the earth participated in the evolution of the basin water body and replenished Lop Nur Salt Lake. Lop Nur is the ultimate destination of water in Tarim Basin. The geological background of Tarim Basin, that is, the old strata are rich in potassium, which constitutes the source of potassium formation in Lop Nur Salt Lake, which not only has important enlightenment for explaining the mechanism of potassium enrichment in Lop Nur and the theoretical study of potassium formation in China landmass, but also lays a scientific foundation for searching for potassium in Lop Nur and its periphery.
Fig. 36 Schematic diagram of potassium salt deposition and formation process of potassium-rich brine in rift basin.
(3) Potash prospecting and resource prediction. Potassium salt exploration in Jiangling Depression: Under the guidance of the potassium formation model of rift valley, through the implementation of oil and potassium exploration and comprehensive research of many disciplines, the distribution law of potassium-rich brine in Jiangling Depression is basically mastered, the potassium salt resource model is established, the potassium chloride resource in potassium-rich brine is predicted to be 820 million tons, and the main direction and the best target area for the next exploration are determined.
Prediction of potassium salt in Lop Nur: The model of potassium salt accumulation in salt lake is established, and it is calculated that there may be11900,000 tons of KCl resources in the water body of Lop Nur Formation. At present, KCl brine resources/reserves are 3,265,438+1100 million tons, with the remaining 789 million tons. Therefore, it is inferred that there is still a large space for finding potassium in Lop Nur.
Metallogenic prediction in Lanping-Simao basin: the volume method is established to predict the resources of metallogenic geological bodies, and the potassium salt resources in the prediction area of Lanping-Simao basin are calculated to reach1980,000 tons; The comprehensive evaluation shows that the reliability of the prediction results is 0.65, which is higher than the traditional geological volume method (Fan, Xiao Keyan, etc. 20 13). Up to now, 20 million tons of potassium ore resources have been discovered in Mengyejing alone, indicating that Lanping-Simao Basin still has great potential for potassium exploration.
(4) Study on the development and utilization of low-grade potassium salt in salt lakes in Qaidam Basin, Qinghai. A multi-stage advancing ore dissolution method for salt mining was developed, and the national invention patent (patent number: ZL2009 1 0235552) was obtained. x)。 The experimental results in Beletan area of Qinghai Province show that this technology can raise the water level of solvent as a whole, increase the dissolution area, increase the total amount of beneficial mineral resources for soluble ore mining, improve the efficiency of dissolved ore, cut off the dominant channels generated by single-stage drive, and effectively reduce the waste of solvent direct discharge. If this technology is successfully applied to the whole Qarhan area, it will be of great significance to alleviate the shortage of potassium salt resources in China.
(5) The complete set of technology development of potassium sulfate with 6,543,8+200,000 tons/year in Lop Nur Salt Lake. The research achievement won the first prize of National Science and Technology Progress Award 20 13 (mainly completed by SDIC Xinjiang Lop Nur Potash Co., Ltd., Changsha Design and Research Institute of Ministry of Chemical Industry, China Blue Ocean Design and Research Institute, Institute of Mineral Resources of Chinese Academy of Geological Sciences, Tsinghua University. Mainly completed by: Li Hao, Tang Zhongfan, Yin Xinbin, Lei Guangyuan, Tang, Li Li, Guo Xingshou, Yan Hui, Zhan, Liu Chenglin, Hou Minyue).
The development of large-scale complete set technology of potassium sulfate brine mine in Lop Nur (Luobei sag) involves three technical systems: mining (brine) system, salt field system and device processing system. The Institute of Mineral Resources, Chinese Academy of Geological Sciences is mainly engaged in the exploration, genesis and occurrence law of Luobei brine resources, and its chemical characteristics (potassium chloride grade, etc.) have been identified. ) and the distribution law of potassium-rich brine in the mining area, reservoir physical properties, brine dynamic conditions and brine enrichment areas, which laid a scientific foundation for the selection of the first mining area of the mining system.
7. New progress of porphyrite iron ore research in the middle and lower reaches of the Yangtze River.
Fully understand the role of oxide barrier of gypsum salt layer in porphyry iron ore mineralization in the middle and lower reaches of the Yangtze River. According to the close relationship between the gypsum salt layer of Middle and Lower Triassic in the middle and lower reaches of the Yangtze River and porphyry iron ore, it is proposed that the gypsum salt layer not only provides a large number of mineralizers such as Na+ and Cl- for mineralization, but also serves as an important oxidation barrier, which oxidizes Fe2+ in the magma melt into Fe3+ and promotes the differentiation of magma into iron oxide, thus forming slurry iron ore. The ore bodies of slurry type and hydrothermal type coexist, and both of them have a "double-layer metallogenic structure" in space (Figure 37).
Fig. 37 "Double-layer Metallogenic Structure" of Porphyry Iron Ore in the Middle and Lower Reaches of the Yangtze River
8. Research progress of iron ore deposits?
In this paper, the dynamic background of large-scale iron ore mineralization in the fifth stage is put forward, and the ore-controlling systems related to the four types of iron ore are divided into five types: submarine volcanic jet deposition type, ultra-shallow intrusive type, intermediate-shallow intermediate-acid intrusive type, deep mafic-ultramafic intrusive type and superimposed and reformed type. Geological and geophysical models of sedimentary metamorphic, skarn and magmatic iron deposits are established and verified, which lays an important foundation for metallogenic prediction.
It is pointed out that besides silica and ferric hydroxide colloid, there are ankerite mud in BIF original sediments. The spatial distribution, ore types and genetic mechanism of sedimentary metamorphic iron-rich ores are summarized. The zircon U-Pb age of altered rocks related to large-scale iron-rich deposits in Gongchangling No.2 mining area, Liaoning Province is1840 7ma for the first time, and the formation age of iron-rich deposits is determined to be Mesoproterozoic. Through the study of ore-controlling structure, it is pointed out that anticline has obvious control effect on ore bodies, especially concealed ore and iron-rich ore, ductile deformation is beneficial to the separation of silicon and iron to form iron-rich ore, and the fracture system composed of interlayer fracture and other faults of poor iron ore is also beneficial to the formation of iron-rich ore.
It is determined that the formation age of marine volcanic iron ore in Altai area is 398 ~ 385 Ma, that of Xitianshanhai volcanic iron ore is 365,438+07 ~ 300 Ma, and that of Meishan porphyry iron ore in Ningwu area is early Cretaceous. It is proposed that the metallogenic dynamic background of marine volcanic iron deposits is the marginal environment of continental magmatic arc; It is suggested that Abagong iron mine in Altai and porphyry iron mine in Ningwu area belong to Kiruna type.
Iron polymetallic deposits related to volcanic intrusive rocks in northern Xinjiang can be divided into volcanic, skarn, diabase and magmatic types, which were formed in Devonian (407 ~ 384 Ma), Middle Devonian (382 ~ 375 Ma), Early Carboniferous (362 ~ 324 Ma) and Late Carboniferous (323 ~ 323~302Ma). Formed in six environments, the Devonian in Altai was magmatic arc environment, the Middle Devonian in the northern margin of Junggar was oceanic island arc environment, the early Carboniferous in the western Tianshan was magmatic arc environment, and the late Carboniferous was transformed from subduction-collision to extension environment, the Carboniferous in the eastern Tianshan was island arc environment, and the early and middle Permian was post-collision environment. It is pointed out that most intrusive rocks related to mineralization are subvolcanic rocks at the same time as volcanic rocks and are the products of homologous evolution.
9. New progress in isotope geochemistry research?
The experimental method of lithium isotope is established, and the analysis accuracy is equivalent to that of similar laboratories in the world, which realizes the long-term stable reproduction of standard samples and can be used to determine the lithium isotope composition of natural samples. According to the results of Li isotope study, it is considered that the fluid of Tethys oceanic crust plate is involved in the source enrichment of porphyry, and the fluid/melt subduction of Indian crust is involved in the source enrichment of potassic ultrapotassic volcanic rocks, and the genetic model of porphyry and potassic ultrapotassic volcanic rocks in Lhasa block is put forward. The provenance characteristics of carbonate rocks in rift environment and collision environment are compared.
10. The process of sulfate thermal reduction (TSR) was first observed in situ by using timely capillary synthesis fluid inclusion technology.
Sulfate thermal reduction reaction widely exists in all kinds of oil and gas basins and metal deposits related to basin fluids, so it is of great significance to understand TSR reaction mechanism for the development and utilization of oil and gas reservoirs and the metallogenic mechanism of metal deposits related to basin fluids. For a long time, many scholars have done a lot of research on TSR reaction from the aspects of field geological characteristics, theoretical calculation and experimental simulation. However, due to the complexity of TSR reaction process and the existence of a series of intermediate products, it is difficult to reveal the TSR reaction process effectively by quenching analysis technology in the past. In order to solve this problem, we took the lead in introducing the latest development of timely capillary synthesis fluid inclusion technology into TSR simulation experiment, and combined with in-situ laser Raman analysis, we realized in-situ observation of TSR reaction at high temperature and high pressure. Previous studies have considered that the reaction between S- and CH4 is not a TSR reaction in a strict sense (Chen et al., 2009). Through a series of simulation experiments, we found that the reaction of S-H2O-CH4 system was carried out step by step at high temperature and high pressure, including the hydrolysis of S and the thermal reduction reaction (TSR) of sulfate at high temperature, and the sulfate was reduced by CH4 above 250℃. This temperature is closer to the temperature of TSR reaction in natural system than that in previous simulation experiments, which provides an important experimental basis for deeply understanding the participation of methane in TSR reaction in natural system (Figure 38).
Fig. 38 Fluid inclusion (a) synthesized by timely capillary tube and in-situ laser Raman spectroscopy analysis device (b)
1 1. Research progress of Mesozoic granites in Qinling Mountains?
The evolution characteristics of Mesozoic granites in Qinling Mountains are systematically summarized, and the relationship between late Mesozoic granites and molybdenum and other polymetallic minerals is discussed. The evolution of early Mesozoic granite in Qinling Mountains in two stages, 240 ~ 250 Ma and 225 ~ 190 Ma, is revealed, and the evolution characteristics from subduction collision to post-collision are determined. The transformation from I-type to I-type and the evolution trend of A-type in 160 ~ 130 Ma and 120 ~ 100 Ma late Mesozoic granites are determined, revealing the close relationship with molybdenum deposits. Based on the analysis of the temporal and spatial variation of isotopic composition of Mesozoic granites, the characteristics of deep crustal composition of different blocks in Qinling Mountains are preliminarily identified, which provides a new basis for further understanding the distribution law of mineralization.
12. research progress of Gejiu super-large tin-copper polymetallic ore?
In cooperation with Australian and American counterparts, the magmatism and mineralization of Gejiu super-large tin-copper polymetallic mining area in China were anatomically studied.
(1) Large-scale magmatic metallogenic background in Gejiu area. The formation age of basic-neutral-acid magmatic rocks in Gejiu area was systematically studied by using SHRIMP and LA-ICPMS high-precision zircon U-Pb dating methods. It is found that the crystallization age of this set of magmatic rocks with different genesis is basically the same, which constitutes a bimodal rock combination. In addition, it is pointed out that the granite in this area experienced strong differentiation and crystallization during its formation, and the metallogenic ability is positively correlated with the degree of differentiation. Gabbro is formed by the melting of lithospheric mantle materials and a small amount of crustal contamination. Dark granular inclusions are the result of physical and chemical exchange between basaltic magma and felsic magma. Alkaline rocks are formed by strong differential crystallization of mantle-derived magma, and mafic dykes are the result of a large number of crustal contamination of the same mantle-derived magma. Studies show that large-scale magmatism-mineralization in Gejiu area was formed under the background of lithospheric extension and strong crust-mantle interaction (Figure 39).
Fig. 39 Large-scale magmatic metallogenic model in Gejiu area
(2) The genesis of Gejiu tin polymetallic deposit. Combined with the spatial zoning of ore-forming metal elements and the evolution law of physical and chemical conditions of ore-forming fluids in Gejiu mining area, it is considered that Gejiu tin has typical hydrothermal deposit characteristics related to granite. The mapping results of H-O-S isotope system support that the ore-forming material is mainly from granite, and the early ore-forming fluid is mainly magmatic water dissolved by granite, and the late fluid mixing occurs in Tianshui/surface water. The results of mica Ar-Ar, molybdenite Re-Os and LAICPMS cassiterite U-Pb dating confirm that the metallogenic age of Gejiu area is consistent with magmatic activity, which occurred in the late Cretaceous. (3) Using new technologies and methods to explore the genesis of "interlayer oxide ore" and the metallogenic conditions of S N, and using the newly developed Fe isotope analysis technology, the interlayer oxide ore is systematically studied from the perspective of mineralized elements themselves. It is found that the iron isotopic composition of ores with different oxidation degrees changes, and it is considered that the ore body was formed by late oxidation. The trace elements in cassiterite crystal were studied in situ by SEM-CL and LA-ICP-MS techniques. It is found that the development degree of cassiterite banded structure is negatively correlated with the distance between granites. Cassiterite in different metallogenic environments has similar trace element characteristics, and the element content is controlled by the atomic radius and electronic valence of cassiterite, which provides important new observations and new understanding for tin metallogenic conditions.
13. Dayaoshan area and Caledonian tungsten-molybdenum mineralization?
The time-space framework of magmatic rocks and related deposits in Dayaoshan area in the southwest section of Qinhang metallogenic belt is preliminarily established, and the types, characteristics and metallogenic specificity of magmatic rocks are studied. Through the anatomy of typical deposits, the types of deposits are determined, the metallogenic mechanism is discussed and the metallogenic series is re-divided. It is pointed out that there is a Caledonian porphyry-skarn-quartz vein type tungsten-molybdenum-copper metallogenic series related to granodiorite in Dayaoshan area, which has great prospecting potential and will be one of the main prospecting directions in Dayaoshan area in the future. On this basis, two prospecting areas, Gulong-Daoshui-Xia Ying and Dali fault zone, were proposed, and three porphyry-skarn-syenite W-Mo-Cu-Bi deposits were newly discovered around the known large deposits in Shedong, which made new achievements in guiding mineral exploration with the innovation of metallogenic theory.