山东沂南金矿铜井矿区矿液活动中心控矿特征

沂南金矿铜井矿区的岩浆岩主要为侵入岩,严格受断裂构造控制。铜井闪长岩-闪长玢岩岩体为多期次侵位的复合岩体。分析了矿区及矿床地质特征,讨论了岩浆和矿液活动中心对矽卡岩型斑岩型金铜矿床的控矿作用,并对矿区可能存在的矿液活动中心位置进行了总结。研究表明:(1)矿区1个成矿岩体边缘或内部有数个矿液活动中心,矿体群受矿液活动中心控制,矿体多赋存于活动中心附近,远离活动中心矿体尖灭,矿体群消失;(2)矿区可能的矿液活动中心位置为岩体与围岩呈断层接触且有构造破碎带分布的位置,岩体边部拐角处有不同方向断层交汇地段,岩体中有"根"围岩捕掳体存在的地段,岩体边部构造形态特别复杂地段,较大岩枝边部继承性断裂复活地段等。     

西藏仁布念扎金矿矿床成因及找矿标志

念扎金矿位于冈底斯铜(钼)成矿带南部,产于强片理化及褪色蚀变超基性岩片与燕山期石英闪长岩体的接触边部。矿体主要赋存于含矿构造带蚀变破碎带,多呈脉状产出,厚度较稳定且矿化较均匀,矿区内地质构造复杂,矿体空间展布及富化主要受控于NW向断裂,NE向断裂则主要为破矿构造,矿区内褐铁矿化、硅化、碳酸盐化与矿化呈正相关。本文通过对矿床成矿背景及成矿规律的总结,表明矿化主要受地层岩性(围岩)、构造及围岩蚀变控制,属于构造蚀变型金矿床,并提出各含矿带深部、倾向延伸部分及石英脉集中地段找矿潜力较大,可为相似成矿条件矿段的地质勘查工作提供理论指导。     

河南省嵩县下蒿坪金矿地质特征及成因浅析

通过对下蒿坪矿区成矿地质背景,矿床地质特征,地层、岩浆和构造控矿条件、母岩、围岩、夹石、铅同位素、矿石的矿物成份、结构构造等研究。认为该区成矿与燕山期的构造运动、合峪岩体（岩浆热液）及熊耳群火山活动密切相关,是严格受构造控制的中低温热液脉状和蚀变岩型金矿床。     

澳大利亚昆士兰州克朗克里铜(金)矿床地质特征及成矿规律

克里克朗铜(金)矿床位于芒特—艾萨构造窗内旺加及匡比—马布的交汇部位,地处世界著名的铜—铅—锌—银—金成矿带上。矿区主要出露中元古界的Soldier Cap群及Mary Kathleen群,多期、强烈的变形变质作用使得区内断裂构造发育,位于矿区中部的F4~F11控制着矿(化)体的产出。矿(化)体多赋存于花岗岩断裂带及构造破碎带中,断裂为含矿热液提供运移通道,同时萃取早期岩体中的成矿元素在上部断裂带内富化成矿,形成构造热液型铜(金)矿床。通过对矿区内进行物探试验,发现磁法找矿效果良好,确定位于矿区中—东部的M-01及M-03异常具有较好的找矿前景,断裂构造、磁异常及围岩蚀变地段是有利的找矿标志,为下一步找矿工作提供了重要的理论依据,对认识区内具有相似成矿背景矿段的找矿思路具有重要参考作用。     

云南者桑金矿构造控矿规律及找矿方向

为进一步探明云南者桑金矿构造控矿规律及找矿方向,通过野外实地调查,综合分析者桑金矿矿床地质特征和控矿构造特征,认为矿区主要有NE向断裂构造控矿、次级褶皱构造控矿、岩体接触带构造控矿3种控矿构造类型。这些控矿构造为该区金矿床的形成提供了热源、驱动力、运移通道和富集空间。矿区经历了多次构造演化,主要有加里东期运动、印支期运动和燕山-喜山期构造活动,使得控矿构造具有多期活动性,使成矿元素多次被活化,导致成矿作用的叠加是者桑微细粒浸染型金矿床的典型特征。根据者桑金矿的构造控矿特征,下一步找矿工作应围绕与NE向断裂近于平行的断裂破碎带、次级褶皱膨胀带和岩体接触带、断裂深部进行,尤其石英发生的二次碎裂是良好的成矿标志。     

河南老里湾银矿成矿地质特征及找矿方向

河南省洛宁县老里湾银矿的发现是崤山断隆东部地区重要的找矿成果。对老里湾银矿床的成矿地质背景、矿床地质特征及控矿因素等进行了详细的研究,认为构造条件是控矿的重要因素,矿体赋存在区内五条断裂带内的构造蚀变岩带中。矿化与岩浆岩分布有紧密联系,成矿元素沿似斑状二长花岗岩内外接触带及断裂破碎带分布成矿,总体上在岩体上部形成不规则的矿化富集带。区内岩石蚀变强烈,由中心(断裂构造)向外(围岩)呈近于平行和对称分布的蚀变分带。结合区内化探异常成果,笔者认为矿区预测远景资源量有望新增为一个大型银矿和一个中型铅锌矿,且区域范围内具有继续寻找同类型矿床的潜力。     

磁法勘探在叶县大木厂矿区铁矿找矿中的应用

河南省叶县大木厂铁矿属于高—中温热液充填型多金属矿化,经地表氧化生成的铁帽类型铁矿。通过研究,认为熊耳群与多金属矿成矿的关系是本次工作的理论依据;在勘查区内发现的断裂构造主要为近东西向的F_1、F_2和F_6,以及北东—南西向的断裂构造F_3、F_4和F_5。通过矿区高精度磁测绘制的ΔT平面等值线图和对6号线进行反演解释的剖面图中对磁异常强度的分析,可以看出磁性体大致的分布情况,并与在断裂构造上施工的槽探工程揭露的矿体情况进行对比,两者基本吻合,查明铁矿石赋存于熊耳群下组杏仁状安山岩中,矿体受这三条矿化断裂构造蚀变带F_1、F_3和F_4控制,为进一步找矿指明了方向。     

铁山铁(铜)矿床地质特征及成矿作用探讨

铁山铁(铜)矿床位于长江中下游成矿带西亚带、鄂东南铁铜成矿区亚带北段.矿体主要赋存于燕山早中期侵入的闪长岩类和三叠系大冶群碳酸盐岩第三～六段的断裂复合接触带上.从岩浆的侵入到岩体结晶冷凝,接触带经历了压性到张性改造的转变.通过野外观察及室内研究,铁山铁铜矿床成矿作用主要为早期闪长岩浆熔融出富铁熔浆沿张性构造带贯入成矿,矿体与围岩呈截然接触关系,矽卡岩化较弱,后期为接触交代成矿.根据铁山铁矿床的成矿地质特征、两期成矿与先后侵入岩体在时空上的分布规律,初步建立了铁矿浆充填成矿、接触交代式成矿的成矿模式.     

安徽省铜陵市金口岭铜矿成矿地质特征及找矿标志

金口岭铜矿属铜官山矿田的组成部分,产于石英闪长岩体与南陵湖组、龙山组的接触带上,呈不规则的脉状和透镜状展布。随着该矿不断开采,矿山资源储量急剧减少,开展深部找矿工作对延长矿山服务年限具有重要意义。结合矿区相关地质工作成果,在分析该矿区域成矿地质背景的基础上,对矿区及矿床地质特征、找矿标志进行了详细分析。研究表明:(1)矿区内的褶皱构造为金口岭向斜和铜官山背斜,区内断裂构造具有多期性、继承性的特征,按与成矿过程的相对时期关系可划分为成矿前断裂、成矿期断裂以及成矿后断裂;(2)矿区地层岩性、构造、围岩蚀变及地球化学异常为有利找矿标志。     

江西甲路金矿区成矿地质条件及找矿前景分析

赣东北地区大地构造环境复杂,成矿地质背景优越,金矿床类型多样,其中韧脆性剪切带控制的蚀变岩型金矿尤为突出,找矿潜力巨大.通过对甲路金矿区成矿地质条件分析,论述不同序次的断裂演化过程及对成矿的作用,初步认为甲路-石岭区域性大断裂是矿区重要的控岩控矿构造;矿带、矿床、矿体受不同序次的韧脆性剪切带控制.中元古界双桥山群是初始矿源层,鹅湖岩体对本区的成矿起到提供热液、矿质的作用.经分析对比,双桥山群金背景值表现出的"金亏损",预示矿区具有找大矿的可能.     

China rare earth market review

正November 21~30,2014Due to weak demand from downstream industries,transactions of rare earth in Chinese domestic market were inactive.It was difficult to sell any rare earth products except for dysprosium oxide and terbium oxide.Suppliers lost confidence in recent market.Demand for rare earth products was soft.Consumers continued to take a wait-and-see attitude.Rare earth export market remained slow.     

Current situation and future trend of China rare earth luminescent materialindustry(continued)

<正>Developing ecological lighting source The world is facing the big problem of energy shortage today and the contradiction between economy development and environmental protection is worsened.Therefore,people are more likely to choose an ecological light source that is more energy efficient and environmental friendly.The choice provides great opportunity for the development of rare earth optical material industry in China.The concept of green lighting positions rare earth luminescent material as a leading player in illumination market.The light source of both rare earth luminescent lamp and LED lamp is ecological and energy saving.This is why     

Galaxy Magnets achieved the net profit of 34.02 million yuan in the first six months of 2014

正Galaxy Magnet announced its financial results for the first half of 2014 on August 14.For the first six months ended on 30 June 2014,Galaxy Magnet achieved operation income of RMB 182.3 million,up8.40% over the same period of 2013,and the net profit attributable to the shareholders of the listed company of 34.02 million yuan,increasing 35.49% over the same period of last year.Stable performance increase was led by development of new customers and application market of magnets.     

Rare Earth Application in Steel in China

<正>China has rich rare earth resources.Output of rare earth and steel in China ranks the top first in the world.However,there is still certain distance between the steel produced in China and developed countries from the point of varieties and quality.China still has to import some types of steel.Improving the quality should be emphasiZed in future development of steel industry in China.Rare earth can be used to upgrade traditional steel     

稀散金属产业的观察与思考

分析了近年来国内外稀散金属产业的生产、应用、资源与市场状况.铟锡氧化物靶材、砷化镓晶片、锗红外材料、铼高温合金和硒在电解锰及玻璃的应用等已成为稀散金属的主要应用领域.稀散金属的产量快速增长达到历史高位而导致了市场的失衡.以GaInP_2/GaAs/Ge,CIGS和CdTe为代表的非硅系太阳能电池是稀散金属的新兴应用领域,将给稀散金属带来日益增长的需求.     

China rare earth market review

正November 1~10,2014Chinese rare earth market was still inactive.Demand for rare earth products was weak.Consumers took a wait-and-see attitude for lower price.As it was an off season for rare earth products,it was expected that prices of rare earth could continue turbulence at the bottom in short terms.Due to a sharp drop,demand for rare earth from downstream recovered.Affected by new energy vehicles,wind powder and energy-efficient appliances,production of rare earth permanent     

China rare earth market review

正August 1~10,2014 There was some good news in rare earth industry recently.Restructuring plans of rare earth groups led by Baotou IronSteel Group and Xiamen Tungsten Group respectively have been approved by MIIT.And rare earth storage policy,which had been expected for a very long time,has been launched officially.Pushed by the good news,rare earth price started to rebound since August 5.Price of didymium oxide and dysprosium oxide rose about 1% to 2%,averagely.About 10% of     

China rare earth market review

正July 1~10,2014Due to weak demand from downstream industry and slow transactions,rare earth market remained weak and price of rare earth products continued to decline.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,     

New energy vehicle:an opportunity for rare earth magnets

<正>Extracted from Securities Guide 1.Popularity of new energy vehicles—an irresistible market trend1.1 Progress of new energy vehicles Chinese Premier Li Keqiang said recently on a visit to Xi'an BYD Autos that new energy vehicles,especially new energy bus,can lessen environment and noise pollution.He encouraged the use of new     

Brief news

正Corun invested another 50 million yuan in power battery for HEV Hunan Corun announced on 27 June that they had signed the cooperation agreement to jointly built Corun(Shaoxing)Autos Power Battery System Co.,Ltd.in Shaoxing Binhai New City.According to the announcement,total registered