Yangtze valley is one of the most important metallogenic regions in the Jurassic-Cretaceous period in East Asian continent, where more than 200 polymetallic Cu-Fe-Au and Mo, Zn, Pb, Ag deposits are documented. Cu-Au deposits in Anhui Province (Lower part of Yangtze) are the most important among these deposits. Data of chemical compositions of trace elements were collected from literature for Yanshanian (Mesozoic) igneous rocks which have close relationship with the Cu-Au mineralization. The Cu-Au nuneralization in middle to lower Yangtze valley can be divided into three types: mainly skarn type, porphyry type and volcanic type. In this paper, the details of trace and rare earth elements from Shaxi, Anqing, Chuxian, Tongling and Luzong Cu-Au bearing deposits are dealt with in detail. Rocks in the localities of Shaxi, Chuxian and Anqing intrusives have almost similar REE distribution patterns which show little assimilation with the wall rocks during the formation of Cu-Au deposits. However, the REE distribution patterns in Tongling skarn deposit are different altogether when compared to the other Cu-Au related rocks adjacent to areas of Mesozoic intrusives. This might have resulted due mainly to the volatile transport or assimilation of some elements producing complex patterns of trace element distributions superimposed on effects caused by crystal/melt equilibria. The trace element distribution shows that the mantle compatible elements such as Sc, Cr, Co and Ni and some transitional compatible elements such as Ti, V, Mn, Fe and Cu have strongly fractionated compared to the average contents of trace elements of crustal rocks, especially those of Cu, with very largely positive anomaly. This could be interpreted as an important crustal-mantle interaction during the Yanshania (Mesozoic) period when the multiple Cu-Au mineralization formed in the Yangtze metallogenic belt in China. The lithophile elements such as K, Rb, Th, Sr, Ba, Li and La are also enriched compared to the average contents of the crustal rocks, reflecting the regional geochemical anomalies of these elements and may be interpreted as an important reason of Cu-Au mineralization in this region.

This paper discusses the relationship between the volume loss, fluid flow and component variations in the ductile shear zone of the southern Tan-Lu fault belt. The results show that there is a large amount of fluids flowing through the shear zone during mylonitization, accompanied with the loss of volume of rocks and variations of elements and oxygen isotopes. The calculated temperature for mylonitization in different mylonites ranges from 446 to 484 degrees C, corresponding to that of 475 to 500 degrees C for the wall rocks. The condition of differential stress during mylonization has been obtained between 99 and 210 MPa, whereas the differential stress in the wall rock gneiss is 70-78 MPa. The mylonites are enriched by factors of 1.32-1.87 in elements such as Ti02, P205, MnO, Y, Zr and V and depleted in SiO2, Na2O, K2O, Al2O3, Sr, Rb and light REEs compared to their protolith gneiss. The immobile element enrichments are attributed to enrichments in residual phases such as ilmentite, zircon, apatite and epidote in mylonites and are interpreted as due to volume losses from 15% to 60% in the ductile shear zone. The largest amount of SiO2 loss is 35.76 g/100 g in the ductile shear zone, which shows the fluid infiltration. Modeling calculated results of the fluid/rock ratio for the ductile shear zone range from 196 to 1192 by assuming different degrees of fluid saturation. Oxygen isotope changes of quartz and feldspar and the calculated fluid are corresponding to the variations of differential flow stress in the ductile shear zone. With increasing differential flow stress, the mylonites show a slight decrease of delta O-18 in quartz, K-feldspar and fluid.

The Yangtze Valley was one of the most important metallogenic regions during the Jurassic-Cretaceous period in East China, where more than 200 polymetallic Cu-Fe-Au, Mo, Zn, Pb, Ag deposits have been found. Trace elements were chemically analyzed and the relevant data were collected from literature for the Yanshanian (Mesozoic) igneous rocks which have close relationship with Cu-Au mineralization. Copper mineralization in the lower Yangtze Valley can be divided into three major types: skarn type, porphyry type and volcanic type. The porphyry type is of rare occurrence, such as the Shaxi porphyry copper deposit in the northern part of the lower Yangtze metallogenic valley. This paper focuses on the REE and trace element geochemistry of several Cu-Au deposits along the lower part of Yangtze metallogenic valley in Anhui. The results showed that there are differences in REE distribution for these four types of Cu-Au mineralization, which confine the sources of REE and trace elements as well as other mantle and transitional compatible elements. The results of both REE and trace element geochemical studies showed that these elements with different characteristics have different origins, probably representing different sources of Cu-Au deposits in the deep crust and upper mantle environments. The 40Ar/39Ar dating of one biotite sample gave an age of 131 Ma with a high level of confidence, which represents the age of formation of the Shaxi porphyrite intrusive with porphrytic Cu-Au mineralization, which is consistent with that of the majority of the adjacent acid intrusives with mass Cu-Au mineralization along the Yangtze metallogenic belt in the Yanshanian period (Mesozoic). This is the first attempt to use the high precision method to date the Shaxi porphyrite intrusive.

建筑设计前期策划是为业主制定详细的任务书及对建筑进行远、近期规划构想的过程。前期策划确定建筑设计目标,直接影响建筑能否经济合理、获得较高综合效益。针对体育建筑具有不同于其它建筑类型的特点,本文指出建筑师应及早地参与前期策划工作,分析论证并解决项目性质、规模大小、选址、功能结构、结构形式及设施选择等主要问题,为最终提高体育建筑综合效益打下坚实、可靠的基础。

Shaxi Porphyry Cu-Au deposit in central Anhui Province is located in the Middle-Lower reaches of Yangtze metallogenic valley in east China. Red sandstone and conglomerate of Cretaceous age, clastic rocks of Middle and Lower Jurassic, clastic rocks of continental sea facies of Upper Devonian-Middle Silurian age, various continental volcanic rocks of Jurassic age form the rock types of the Shaxi porphyry copper-gold metallogenic belt. The ore district is cut by multiple faults, of which the most important are Tanlu fault and Fanshan-Tongling faults, the former being the largest fault system in East Asian continent and the later being the regional deep fault. The geological, geochemical and mineralogical methods used to investigate the porphyry copper-gold deposit associated with large scale sulphide mineralization forms the theme of this paper. Through field geological surveys, mineralogical observation, compositional analyses on minerals using EPMA, geochemical analyses on Cu-Au-bearing intrusive rocks, fluid inclusion and oxygen, hydrogen, sulphur isotopic studies, and element distributions detected by PIXE system, the characteristics of mineralization and gold occurrence in the Shaxi porphyry copper-gold deposit have been fully investigated. The results of the study form the basis for further research and exploration on the porphyry copper-gold deposit of the Middle-Lower Yangtze region.

整合基础上适当地激活异化建筑结构脉络,是建筑尊重城市、追求真实本质的基本设计法则.本文结合河北能源职业技术学院图书馆设计实践,从几何形体、空间秩序、均衡比例等方面分析了整合脉络的设计手法,并从局部空间异化和异性要素引入两方面探讨了如何把握激活异化的尺度.

Shaxi porphyry Cu-Au deposit was one of the important discoveries of the exploration in the middle-lower reaches of Yangtze River in China in 1970’s. Gold occurrence in the Shaxi porphyry copper-gold deposit (central Anhui province, eastern China) was investigated by means of microscope analyses, EPMA and PIXE. Combined with geological and mineralogical methods, the characteristies of occurrence of gold in the large scale sulfide mineralization in this region were fully investigated. The results show that gold distributes in both chalcopyrite and pyrite as submicroscopic inclusions (less than 1 µm). Au is positively correlated with As, Fe, S, Cu, Zn and Ti. The condition of gold transformation in thermal fluid system controlling deposition of Au in the region is probably the oxidation potential of the red sedimentary rocks of shale and fine grain sandstone which may be crucial as a geochemical barrier to the reducing fluid. This study lays foundation for the further research and exploration of the porphyry copper-gold deposit both theoretically and practically in the lower reaches of Yangtze region.

Gold in the Jinya Carlin-type deposit, assaying 6.27 g/t Au, was characterized using a comprehensive mineralogical and analytical approach which includes optical microscopy and several advanced microbeam techniques. Each gold carrier was quantified independently. Gold in the Jinya ore occurred as microscopic gold and submicroscopic gold. Submicroscopic gold, primarily in the form of solid solution gold, was carried mainly by arsenopyrite (accounting for 77% of the gold assay), and to a lesser extent (~16%) in arsenic-rich fine-grained and microcrystalline pyrite. Native gold accounted for 6% of the gold assay. Gold carried in cinnabar and rock minerals is insignificant . Gold deportment shows that (1) arsenopyritization and pyritization can be used as indication of mineralizatio n for the further exploration in the Jinya district, and (2) gold in sulfide s is not amenable to direct cyanidation, but can be recovered by flotation of a sulfide concentrate and then cyanidation with a pretreatment process.

金属硫化物中次显微金的赋存状态已引起人们的重视.张八岭构造带蚀变构造岩型和石英脉型两类金矿金属硫化物中次显微金质子探针分析显示,Au与As、Fe、S、Cu、Pb呈正相关关系,Au以显微包裹体形式存在于金属硫化物中.与蚀变构造岩型金矿相比,晚期的石英脉型金矿可见自然金含量较高,硫化物中显微包裹体金含量较低,可能预示中低温热液金矿中,不仅普遍存在时空分异的金属硫化物中的类质同象金和自然金,还可能存在一定程度的时空分异的自然金和次显微包裹体金.

Shaxi and Changpushan areas are located in the middle part of Yangtze metal mineralization valley, East China; the former area is a known explored porphyry Cu-Au deposit. In this paper the geological, geochemical and geophysical methods are combined to investigate Changpushan area adjacent to Shaxi with sulfide mineralization. As a result, another porphyry Cu-Au deposit in Changpushan area is prospected, which has the similarity to that of Shaxi porphyry Cu-Au deposit. The controlled anomaly area by geophysical exploration in Changpushan is in NNE direction with more than 1500 meters long and 500 meters wide covering an area of about 0.8 km2. The study shows that the anomaly is caused by sulfide mineralization by comparison to Shaxi porphyry Cu-Au deposit. A model to responsible for controlling ore bodies has been proposed in this region. Combined with the tectonic background of forming of large porphyry Cu-Au deposits in China, we proposed the fact that whole area has the advantage to form a large porphyry Cu-Au deposit.

Shaxi and Changpushan areas are loca ted in the middle part of Yangtze meta llic mineralization valley,East China;the former area i s a known explored porphyry Cu -Au dep osit.In this paper the geo-logical,geochemical and geophysic al methods are combined together to i nvestigate Changpushan area adjacent to Shaxi with sulfide mineralizatio n.As a result,another porphyry Cu -Au deposit in Changpushan area is prospected,which has the similarity to that of Shaxi porphyry Cu -Au deposit.The controlled anomaly area by geophysical exploration in Changpushan is in NNE direction with more t han 1500meters long and 500meters wide covering an area of about 0.8km 2 .The study shows that the anomaly is c aused by sulfide mineralization in comparison with t he Shaxi porphyry Cu -Au deposit.A model responsible for controlling ore bodies has been proposed in this r egion.Combining with the tectonic background of forming of la rge porphyry Cu -Au deposits in China,we proposed the fact that whole area has the advantage to form a large porphyry Cu -Au deposit.

Enhancing the characteristic of the city and creating livable environment are the aims of the civil construction for the future. Through analyzing and looking forward to the civil construction of Harbin the idea and the design concept of enhancing city impression and creating livable environment are discussed.

详细地研究了亳县陨石中的主要标型特征.亳县陨石是一块不平衡的普通球粒陨石,球粒结构齐全,保持原始信息多.对球粒中出现的26种结构类型进行了合理的解释,为讨论球粒成因提供了科学依据.对亳县陨石中的几种特殊的标型矿物--指示强还原环境生成的标型矿物张衡矿、指示高压的标型矿物Wadsleyite和指示高温凝聚产物的标型矿物亚铁尖晶石及CAI包体的发现均作了详细的研究与讨论.

对安徽张八岭构造带石英脉型金矿石英流体包裹体温度、成分和氢、氧同位素进行了研究,对成矿流体来源进行了探讨.研究表明,区内石英脉型金矿具有两类成矿流体,一类为中生代大气降水与经历水/岩交换的演化岩浆水的混合;另一类为中生代大气降水与原始岩浆水的混合.

A stony meteorite fell in Lujiang County, Anhui Province. Its falling, minerals, chon-drules, shock metamorphism and oxidation are simply revealed. The meteorite is composed of olivine, bronzite, diopside, clinoenstatite, plagioclase, muscovite, phlogopite, whit-lockite, ka-macite, taenite, troilite, chromite, ilmenite and oxides of iron. Based on its characteristics of mineralogical chemistry and petrology, the chemical rock type of the meteorite is LL6.

对1994年陨落在安徽省境内的庐江陨石的陨落情况、矿物相组成、球粒、冲击变质现象及其氧化现象等进行了介绍. 组成该陨石的矿物有:橄榄石、古铜辉石、透辉石、斜顽辉石、斜长石、白云母、金云母、白磷钙矿、铁纹石、镍纹石、陨硫铁、铬铁矿、钛铁矿和铁的氧化物等. 根据矿物学和岩石学特征,初步确定该陨石化学岩石类型为LL6.

There are three kinds of occurrence of pleonaste, a rare meteoritic mineral, totally found in Boxian meteorite. They are as the following: (i) occurring in the inner circle of the chondrule edge, of which a circle texture is composed; (ii) occurring in the state of inclusions, included in an olivine chondrule, with close paragenesis of wadsleyite; (iii) occurring in the state of porphyry. The chondrule in the first occurrence belongs to CA chondrules. The chemical compositions of pleonaste are heterogeneity except for the atomic ratios of Fe/(Mg+ Fe), which can be attributed to the following reasons: (i) they are congenetic minerals; (ii) the heterogeneity of the compositions of the solar clouds in the early states; (iii) the chondrites are the multiple-stage evolution; (iv) the further proof of Boxian meteorite is an unequilibrium common chondrite.

在亳县陨石中发现了陨石中罕见矿物亚铁尖晶石 .这种矿物以 3种不同产状产出 :（ⅰ ）产在球粒的内圈 ,组成环带结构 ;（ⅱ ）作为包裹体 ,与wadsleyite一起产在橄榄石球粒中 ;（ⅲ ）作为斑晶 ,产在斑状球粒中 .通过对该矿物 3种产状的形态及矿物共生组合、化学成分等特征进行了讨论 ,并探讨了其成因 .Fe/（Fe +Mg）比值的相对稳定性和化学成分的不均一性表明 :（ⅰ ）矿物的同源性 ;（ⅱ ）早期太阳系星云的不均一性 ;（ⅲ ）球粒的多阶段演化特征 .