Porphyry Cu-Au-Mo Mineralization Systems International symposium 

　　Second Announcement 

　　Introduction 

        East Asia, and especially China, was influenced by the Paleo-Asian, Tethys, and Pacific geodynamic systems. This area is characterized by micro-continental blocks, with many suture belts and polycyclic subduction-collision zones. The soft-collision of these components has resulted in overlapping orogenic belts and polycyclic tectono-magmatic-mineralization. In the Mesozoic, subduction of the Tethys, Pacific and Mongolia-Okhotsk plates and collision with North/South China Cratons formed a passive continental margin in east China. Yanshanian movement is the most important geological event in the east of China since the Mesozoic, resulting in the formation of complex tectono-magmatic-mineralization.  

        The Central Asian, Tethyan and Pacific Metallogenic Domains, located in the north orogenic belt of China and in nearby countries, host a series of large and super large porphyry deposits. There are various mineralization styles including porphyry copper, porphyry molybdenum, porphyry gold, porphyry copper-molybdenum (gold) and epithermal gold/silver. These deposits formed in a variety of tectonic settings including subduction, collision, and post-collisional extension.  

        Funded by a series of grants issued by the Natural Science Foundation of China (e.g., such as major project), 973 Project, National key research and development program), many researchers have undertaken research into the porphyry deposit systems in the Central Asian, Tethys and western Pacific orogenic belts. These wide ranging results have contributed to our understanding of the geodynamic setting, crust-mantle interactions, magma-fluid evolution, source of ore-forming elements and the metal enrichment mechanisms for deposits in this region.  

        The Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences (Beijing) will be sponsoring a two-day symposium (September 8th-9th, 2018, Beijing) devoted to promoting the following fields: (1) Clarifying the relationship between different types of porphyry deposits and dynamic process; (2) Investigating the influence of porphyry magmatic and fluid systems on metal enrichment, migration and precipitation; (3) Revealing the connection between deep crust-mantle events and large-scale porphyritic mineralization; (4) Deciphering the factors governing metal provinces, grade and scale, and (5) Capturing the core scientific issues of large-scale mineralization. This symposium will build a platform to facilitate communication of achievements in the field of porphyry deposit system evolution in the three different metallogenic domains and will enhance exploration success in the region. We are warmly anticipating your attendance and participation in Beijing. 

　　Organizer 

　　Key Laboratory of Mineral Resources, Chinese Academy of Sciences 

　　Institute of Geology and Geophysics, Chinese Academy of Sciences 

　　Co-organizer 

　　China University of Geosciences (Beijing) 

　　Peking University 

　　Nanjing University 

　　Jilin University 

　　Committees 

　　The President 

　　Kezhang Qin (Institute of Geology and Geophysics, Chinese Academy of Sciences) 

　　Jun Gao (Institute of Geology and Geophysics, Chinese Academy of Sciences) 

　　Zengqian Hou (Institute of Geology, Chinese Academy of Geological Sciences) 

　　Scientific Committee 

　　Bernd Lehmann, Peter Hollings, Brent McInnes, Zhaoshan Chang, Jeffrey Hedenquist, Dash Butulzii, Yusushi Watanabe, Noreen Evans, Jargalan Sereenen, EY Seitmuratova., Wenjiao Xiao, Tao Wang, Jingwen Mao, Bei Xu, Weidong Sun, Yanjing Chen, Zhaochong Zhang, Hongrui Fan, Taofa Zhou, Pei Ni, Jianbo Zhou, Jianwei Li, Xianwu Bi, Yongjiang Liu, Qingdong Zeng, Ping Shen, Jinggui Sun, Xingwang Xu, Lianchang Zhang, Juxing Tang, Youye Zheng, Xingchun Zhang, Huaying Liang, Huayong Chen, Guiqing Xie, Bo Wan, Bo Wang, Yong Lai, Wenliang Xu, Yunsheng Ren, Yongfeng Zhu, Chunji Xue, Jiajun Liu, Qiang Wang, Xiaofeng Li, Guang Wu, Sihong Jiang, Zhiming Yang, Yuling Xie, Guangming Li, Nuo Li, Jinxiang Li, Rui Wang, Tingguang Lan 

　　Secretary 

　　Mingjian Cao：Email: caomingjian@mail.iggcas.ac.cn (Abstract & registration) 

　　Yimin Zhang: Email: zym@mail.iggcas.ac.cn (others) 

　　Kaixuan Hui: Email: zdy@mail.iggcas.ac.cn (website) 

　　Junxing Zhao：Email: junxingzhao@gmail.com (others) 

　　Important Dates 

　　May 31st, 2018, deadline for submitting registration form 

　　June 25th, 2018, release of the Second Announcement 

　　August 10th, 2018, deadline for abstract submition 

　　September 7th, 2018, registration and information desk opening (9:00-12:00 & 14:00-17:00) 

　　September 8th-9th, 2018, symposium presentations 

　　September 10th-16th, 2018, post-symposium field trips 

　　Symposium theme 

　　(1) Geodynamic settings for porphyric mineralization (Central Asian, Tethys, Pacific, Subduction-Collision-overlapped Orogenic belt). 

　　(2) Porphyry deposit systems in Central Asian Metallogenic Domain. 

　　(3) Key formation processes including magma, fluids and mineralization of porphyry deposit systems. 

　　(4) Implications of exploration on porphyry-skarn-epithermal mineralization system. 

　　Post- symposium field trip 

　　Field trip 1: Duobaoshan-Tongshan-Zhengguang-Chalukou porphyry, epithermal Cu-Au-Mo deposits in the eastern part of Central Asian Orogenic Belt 

　　Brief introduction:  

　　The district of Duobaoshan contains Duobaoshan, Tongshan and Zhengguang mineral deposits, is located in the southeast of Xing’an Block, eastern part of CAOB.  

　　The large Duobaoshan porphyry Cu deposit (2.37Mt Cu @0.47%, 73.4t Au @0.144g/t, 79991t Mo @0.016%, 1045.9t Ag @ 2.059g/t) is a classic example of deformed porphyry Cu mineralization that hosted by pre-ore basaltic-andesitic volcanic rocks and granodioritic composite stock. The Tongshan porphyry Cu deposit contains 0.9Mt Cu @0.48%; 0.04Mt Mo @0.024%. It locates roughly in the middle of northwesternmost Duobaoshan porphyry Cu deposit and southeasternmost Zhengguang epithermal Au-Zn deposit. The Zhengguang intermediate sulfidation Au-Zn deposit is located at ca. 8 km southeast of Duobaoshan porphyry Cu deposit, 4 km in the same direction of Tongshan porphyry Cu deposit. It have precious and base metals Au > 35t @ 2.59 g/t, Zn > 80000 t @ 1.05 wt.%, Ag > 100 t @12.03 g/t. Duobaoshan. Tongshan and Zhengguang deposits are the oldest porphyry and epithermal deposits (~480 to ~475 Ma) within the eastern part of the CAOB. 

　　The Chalukou world-class Mo deposit (~148 to ~147 Ma) is a newly discovered giant porphyry Mo deposit in the North Great Xing'an Range, NE China and is the largest Mo deposit discovered in China to the present. The Chalukou porphyry Mo deposit is located ca. 64 km northwest of Xiaoyangqi Town, Heilongjiang Province, and ~280 km (~four hours drive) northwest of the Duobaoshan porphyry Cu deposit. It contains Mo metal resource of 2.46 Mt @ 0.11%, 0.37 Mt Pb and Zn at an average grade of 1.27%. The mineralized area is divided into east and west sections by the Duobukuer River. It is characterized by multiple ore-forming granitic porphyries, large scale of mineralization and abundant multi-stages of hydrothermal veins.  

　　Participants will have the opportunity to map mineralization, alteration, and deformation features exposed in the walls of the open pit. They will also get to review drill cores. 

　　Fieldwork agenda 　　 

　　2018-9-10 Beijing→Haerbin→Heihe City, and tour and live in the City, Heilongjiang Province. (Plane)

　　2018-9-11 Drive from Jiagedaqi to Duobaoshan and visit Duobaoshan porphyry Cu deposit, and then live in Tongshan Mine. (Bus)

　　2018-9-12 Visit Zhengguang IS epithermal Au-Zn deposit, and then live in Tongshan Mine. (Bus)

　　2018-9-13 Visit Tongshan porphyry Cu and drive from Tongshan to Jiagedaqi City and live in Jiagedaqi City. (Bus)

　　2018-9-14 Drive from Jiagedaqi to Chalukou and visit Chalukou porphyry Mo deposit, and then return to and line in Jiagedaqi City. (Bus)

　　2018-9-15 Tour the Jiagedaqi City (~two hours) and then Jiagedaqi→Haerbin→Beijing. (Plane)

　　Expected all expenses for this fieldtrip: ~7600 RMB or 1200 US $

　　Fieldtrip 2: Weilasituo-Jiguanshan-Chaihulanzi porphyry-epithermal Sn, Mo, Au deposit in the Chifeng city, North China 

　　Brief introduction:  

　　The Jiguanshan Mo deposit is located about 35 km NE of Chifeng city in the Xilamulun metallogenic belt. The large Jiguanshan porphyry Mo deposit (100Mt Mo @0.08%, Wu et al., 2011) is a classic example of high-F porphyry Mo mineralization that hosted by granite porphyry, and minor in lithic tuff and rhyolitic rocks.  

　　The Weilasituo Sn-polymetal deposit is situated in the Hexigten Banner of Inner mongolia and is about 100 km north of Jingpeng city. It contains. Recent works have delineated a deep-seated porphyry Sn–W–Rb system located at western Weilasituo. The porphyry has an estimated resource of 11.2 Mt ore @ 0.83% Sn and 0.14% W, and 10 Mt @5% Zn, 1.2% Cu, 75 ppm Ag. 

　　The Chaihulanzi gold-field is located ~40 km west of Chifeng City. It is one of three major gold deposits (Honghuagou, Lianhuashan, and Chaihulanzi) occurring in the western part of the Chifeng-Beipiao gold-concentration region. It delineated a mineralized zone of approximately 700 m in strike length and obtained a proven reserve of 10t Au metal averaging at ~5 g/t gold.  

　　Participants will have the opportunity to map mineralization, alteration, and structure features exposed in the walls of the open pit. 

    Fieldwork agenda   

　　2018-9-10 Beijing→Hexigten Banner, Inner Mogolian. (Bus) 

　　2018-9-11 Visit Weilasituo Ag deposit, and then live in Chifeng city. (Bus)

　　2018-9-12 Visit Jiguanshan Mo deposit, and then live in Chifeng city. (Bus)

　　2018-9-13 Visit Chaihulanzi Au deposit, and then live in Chengde city. (Bus)

　　2018-9-14 Chengde→Beijing. (Bus)

　　Expected all expenses for this fieldtrip: ~4500 RMB or 700 US $

　　Symposium communication type 

　　Invited speakers (25 min report + 5 min for questions),  

　　Normal oral presentations (15 min report + 5 min for questions) 

　　Poster presentations (120 cm long × 90 cm wide) 

　　Each presenter can display 1-2 posters  

　　Abstract format 

　　The abstract is limited to 2 pages on A4 paper (1000-3000 words, including charts, tables, and references), and must be submitted in Word format. Participants are limited to two abstracts from each first author. 

　　Symposium fees and payment methods 

　　Registration fee for domestic participants: 1,200 RMB (students 600 RMB). 

　　Registration fee for foreign participants: 300 US $ (students 150 US $). 

　　Symposium registration fees include: site rental fees and meals during the meeting. 

　　Note: Students need to show a current student ID when they register, and postdoctor no longer have a student identity. 

　　Please see the following website for the introduction and abstract template of this symposium 

　　(http://pcms2018.csp.escience.cn/)