Metallogenic Epoch of Nonferrous Metallic and Silver Deposits in the Jiaodong Peninsula, China and its Geological Significance

As China＇s most important gold-producing district, the Jiaodong Peninsula also contains copper, lead-zinc, molybdenum （tungsten）, and other nonferrous metal ore deposits, but the space-time and genetic relationships with gold deposits remain uncertain. To investigate the temporal relationship between these nonferrous metal and gold ore deposits, We collected the samples from a number of nonferrous metallic and silver deposits and metallogenetic rock bodies in the eastern Jiaodong Peninsula for isotopic dating. The results show that the Re-Os isotopic model ages of the Lengjia molybdenum deposit in Rongcheng range from 114.5 ± 1.8 Ma to 112.6 ± 1.5 Ma, with an average age of 113.6 ± 1.6 Ma; the LA-ICP-MS ^206pb/^238U ages of 33 zircons in the sericitization porphyritic monzogranite that hosts the Tongjiazhuang silver deposit in Rongcheng range between 122 Ma and 109 Ma, with a weighted mean age of 116.04 ± 0.95 Ma; the LA-ICP-MS ^206pb/^238U ages of 31 zircons in the copper metallogenic pyroxene monzodiorite that hosts the Kuangbei copper deposit in Rongcheng range from 126 Ma to 106 Ma, with a weighted mean age of 116.6 ± 1.7 Ma; and the LA-ICP-MS ^206pb/^238U ages of 19 zircons in the pyroxene monzodiorite surrounding the Dadengge gold and multimetal deposit in Weihai range from 113 Ma to 110 Ma, with a weighted mean age of 111.7 ± 0.6 Ma. All these results indicate that the metallogenic ages of the silver and nonferrous metallic deposits in the Jiaodong Peninsula are in a limited range from 118 Ma to 111 Ma. Previous studies have demonstrated that the isotopic ages of gold deposits in the Jiaodong Peninsula range from 123 Ma to 110 Ma, while Weideshanian magmatism occurred between 126 Ma to 108 Ma. Both these ranges are grossly consistent with the metallogenic ages of silver and nonferrous metallic deposits in this study, suggesting that the large-scale mineralization occurred in the Early Cretaceous when magmatic activities were strong. This epoch may be linked to the lithosphere thinning and the thermo-upwelling extension in eastern China at that time. In addition, field investigation also shows that gold and nonferrous metallic deposits are distributed nearby the Weideshanian granite, with the nonferrous metallic deposits lying within or surrounding the granite pluton and the gold deposits outside the granite pluton. We propose the following mineralization scenario： In the Early Cretaceous, an intensive lithospheric extension induced partial melting and degassing of the metasomatized lithospheric mantle, which resulted in the formation of mantle-derived fluids enriched in metal elements. During the rapid process of magma ascent and intrusion, crust-derived fluids were activated by the magmatic thermal dome and served to further extract ore-forming materials from the crust. These fluids may have mixed with the mantle-derived fluid to form a crust-mantle mixing-type ore-forming fluid. The high-temperature conditions in the center or in contact with the granitic magmatic thermal dome would have been favorable for the formation of porphyry-type, skarn-type, and hydrothermal-vein-type ores, thus forming a series of Mo（W）, Cu, and Pb-Zn deposits in the mid-eastern Jiaodong Peninsula. In contrast, the medium- to low-temperature conditions in the periphery of the magmatic thermal dome would have favored the deposition of gold （silver） ores under the appropriate physiochemical and structural conditions. The metaliogenic epoch of the molybdenum, copper, and silver deposits, and their spatio-temporal and genetic relations to the gold deposits, as demonstrated in this study, not only provide important insights to the study of regional metallogeny, our understanding of the metallogenesis of the Jiaodong type gold deposit, and the geodynamic background of the large-scale mineralization in the Jiaodong Peninsula, but also have practical value in guiding the mineral exploration.

Heavy Metal Assessment among Chinese Nonferrous Metal-exposed Workers from the Jinchang Cohort Study

Environmental exposure to heavy metals has been linked to a wide range of human health hazards. We detected the levels of 15 metals in urine samples from 500 representative sub-samples in an ongoing occupational cohort study （Jinchang Cohort） to directly evaluate metal exposure levels. Fifteen metals, namely As, Ba, Be, Cd, Cs, Cr, Co, Cu, Pb, Mn, Ni, Se, TI, U, and Zn, were detected by inductively coupled plasma quadruple mass spectrometry. The results showed that median creatinine adjustment and geometric mean urinary metal levels were higher in the heavy metal-exposed group, except Se and Zn, than other reported general or occupational populations. Further studies should address the effects of heavy metals on human health.

Suggestions on Refractories in Nonferrous Metal Smelting Furnaces/Kilns

This paper introduces the refractories used in various nonferrous metal smelting equipment in China and the existing problems, and puts forward suggestions on the material of refractories, application of new technologies and production management of refractories, etc.

China Nonferrous Metals Industry is Going forward

In April this year China National Nonferrous Metals Industries Corporation(CNNMIC)performed the Tenth Anniversary Ceremony.In the past decade the CNNMIC realized“fivedoublings”,i.e.the output,profits tax,fixed assets,enterprise revenue and personal income

China Nonferrous Metals Scientific and Technical Joint-Development Group (CNJDG)

China Nonferrous Metals Scientific and Technical Joint-Development Group(CNJDG)consists of thirty odd research,design institutions,universities,colleges,plants,mines,enterprisesand consulting companies(see attached list of membership units)CNJDG has a business executive organization—Nonferrous Metals Scientific and TechnicalDevelopment Corporation(NSTDC)to suit client’s convenience.

The Tenth Anniversary of Establishment of China National Nonferrous Metals Industries Corporation(CNNMIC)

On the 3 April 1993,in the Great Hall of the People a ceremony of the tenth anniversarywas held by CNNMIC.The Vice-premier Li Lanqing and old leaders Fang Yi,Wang Heshouet al attended this ceremony.Lu Dong,Yuan Baohua,Gao Yangwen and Chen Jinhua et alministerial representatives are present also.The ambassadors and/or envoys from Romania,

NONFERROUS METALS BECOMES OBJECTS OF WORLD 6 MAJOR LITERATURE SEARCH SYSTEMS

Press & Publishing Journal (PPJ),March 6,1991:Upon PPJ edit-orial office's request,Institute of Scientific and Technological lnfor-mation of China (ISTTC) made a survey on the situation that how manytheses from China scientific and technological journals have been sele-cted by the 6 most important search systems (Science Literature Index,

Reserves of Nonferrous Metal Resources in China

1.The Status of Major Mineral Reserves in ChinaSince 1949 162 kinds of minerals and thousands of mining area have been found out in geo-logical exploration,and 149 kinds have been proved reserves.Estimated potential cost of 45 kindsonly of major minerals may be more than one billion RMB(?).China is the one of the great-nations of mineral resources in the world.But the distribution in respect of mineral species is not so ideal as expected.According to theirreserves the minerals can be classified as follows.

Business Invitation in Science and Technology for China Nonferrous Metal Projects

1. The production of high grade ferrite permanent magnet device (Beijing General Research Institute of Metallurgy) 2. Beijing Jinlong Science and Trade Comprehensive Building (A,B) (Beijing General Research Institute of Nonferrous Metals)

Bright Prospects——for the Cooperative Development of China's Nonferrous Metals

The strategic focal point of China’s economic development is to shift towards the western area. Efforts will be made to give impetus to economic development in the western region by strengthening the exploitation and utilization of mineral resources. Therefore, the exploration and exploitation of mineral resources in the western area has become a focus of investment. The China Nonferrous Metal Industry Corporation bears an

The Evolutionary History of Ore-forming Processes of Metallic Ore Deposits in Northern Guangxi

The northern Guangxi region is an important rare metal, rare earth metal and polymetallic metallogenic province. In the region there exist five metallogenic series and two metallogenic subseries, whose metallogenesis shows features of polycyclic spiral evolution throughout the geological history. As far as various cycles are concerned, mantle-derived ore substances were reduced while crust-derived ore substances increased from early to late timesfin the whole geological evolutionary history, mantle-derived substances decreased gradually while crust-derived ones increased. Meanwhile ore element associations became more and more varied. In terms of space, mineralization migrated from the old basement outwards, i.e. from west to east during the Precambrian, and from north to south during the Phanerozoic, and again from east to west during the Yanshanian.

Nonferrous

Running Situation of China＇ s Nonferrous Industry from Jan. to Sept. In the first 3 quarters of 2009, the output of ten nonferrous metals in China was 18. 94 million tons, down O. 5% year on year; the output of electrolytic aluminum was 9.09 million tons, down 7.6% year on year; outputs of copper, lead, and zinc increased 8.2%, 20.9%, 5.2% year on year, respectively ;

Nonferrous Geological Prospecting Institutions Discover Important Mineral and Rare Metal Reserves

The quadrennial Secretary General’s meeting of the Geological and Mineral Resources Branch of the China Nonferrous Metals Industry Association(CNMIA)took place on April 9.It’s learned from the meeting that nonferrous geological prospecting institutions across the country completed 3,901 geological

Recent developments in nonferrous metals and related materials for biomedical applications in China:a review

Biomedical materials have received increasing attention in recent decades and have been used in medical applications to advance patient care,such as prosthetic implants,tissue repair and regeneration,drug delivery systems,pharmaceutical or biological therapy products,and sensitive diagnostic technologies.Among different types of biomedical materials,nonferrous metals and related materials(NMRMs)are important and attractive candidates.The updating of biomedical NMRMs and devices heavily relies on original research and applicationoriented innovation.Here,we provide recent research findings and succinct insights into the developments in NMRMs for biomedical applications in China,including the use of titanium,magnesium,copper,zinc,cobalt,zirconium,hafnium,niobium,rhenium,tantalum,tungsten,silver,gold,platinum,palladium,their alloys and compounds,rare earths,high-entropy alloys,and liquid metals.Finally,the literature review concludes with several possible directions of NMRMs for new and future developments in biomedical engineering.

Research and Development of Rare Earth Advanced Materials in China

China is rich in resources of rare earths(REs). Based on tremendous work, China has made great achievements in research and development of REs since 1980s, and the production of RE has won the leading position in the world. The application of RE elements in advanced materials have progressed significantly during the past years. The wide range of rare earth application in China has been reviewed and discussed in this paper, including the development of advanced RE materials (RE-Al alloys, rare earth nonferrous metal alloys, rare earth luminescent materials, rare earth hydrogen storage materials, rare earth permanent magnet and rare earth compounds used in agriculture, i.e., rare earth micronutrient fertilizer etc.) End the research of new RE materials (high T-c rare earth superconductor, rare earth electronic and photonic materials, rare earth ceramics and rare earth precious metal alloys). Finally, the further development works to be required are as follow: (1) to enhance the applied fundamental research, study the intrinsic properties of rare earth elements and develop less well known uses; (2) to undertake the applied research of median and heavy rare earth and find a way out of the unbalance of RE resources in the various applications; (3) to strengthen the applied research of RE element's in energy field, solving the energy-related, energy-saved and environmental problems.

FEATURES

The General Research Institute for Non-ferrous Metals, Beijing, founded in 1952, is the largest institute engaged in the research and development of non-ferrous metals in China. Research is carried out in 21 laboratories. GRINM's research projects are principally related to the development of new materials. It is a base for the study and development of semiconductor materials in China. The Institute also carries out research and development of energy materials, structural metals and ceramics, and forming processes.

Prediction of the Gibbs Free Energies of Formation of Intermediate Compounds in a Binary System

A method for predicting the Gibbs free energies of intermediate compounds in a binary system has been presented, based upon the regulations of the Gibbs free energies of formation of intermediate compounds in the system. The application of this procedure to the V-O system demonstrates that this method is feasible.

Researches on Ni-P Alloys

Worldwide researches on Ni-P alloys have been briefly reviewed,including their corrosion resistance, crystallisation behaviour,amorphisation by ion implantation,and usage as underlayer for thin film magnet- ic media.

Goals of the Nonferrous Metal Industry Stimulus Plan

Efforts will be made to ensure steady operation in the nonferrous metal sector in 2009,and lay the basis for the industry’s sustainable development by 2011.

Shenyang Lianli Copper Builds “Nonferrous Metals New Material Base in Northeast China”

Lianli Copper Industry Group has drafted and implemented'4 industrial parks+10 industrial divisions'development strategy for constructing domestic&overseas'integrated,chain-based,and modernized industry'by relying on existing foundation during the'Thirteenth Five Year Plan'period.One of