西秦岭李子园碎石子斑岩型金矿床地质特征及成矿时代

西秦岭李子园碎石子金矿床受闪长玢岩脉和断裂破碎带的双重控制,矿体上部主要产于闪长玢岩脉附近的断裂破碎带中,矿体下部产于闪长玢岩脉内部;矿石中金属矿物主要为黄铁矿、黄铜矿、方铅矿;黄铁矿为主要的金、银的载体矿物,矿石以细脉-浸染状、细脉-网脉状构造为主,具有斑岩型矿床的蚀变类型特点.矿区与成矿有关的正长斑岩和闪长玢岩的锆...     

甘肃录斗艘金矿床地质特征及成矿机理浅析

录斗艘金矿床属破碎蚀变岩型金矿,产于德乌鲁石英闪长岩与录斗艘石英闪长斑岩接触带附近.矿床受近南北向断裂构造控制,矿体以脉状、透镜状、豆芽状赋存于这些断裂破碎带中.蚀变以黄铁矿化、毒砂化、硅化、绢云母化等为特征.     

甘肃老豆村金矿床地质特征及成矿机制浅析

老豆村金矿床属破碎蚀变岩型金矿,产于德乌鲁石英闪长岩与老豆村石英闪长斑岩接触带附近。矿床受近南北向断裂构造控制,矿体以脉状、透镜状、豆芽状赋存于这些断裂破碎带中。蚀变以黄铁矿化、毒砂化、硅化、绢云母化等为特征。     

辽宁阜新黑虎洞矿区石英脉型金矿地质特征及找矿方向

大巴-瓦子峪-后三角韧性剪切带是辽西著名的金矿成矿带,本文以阜新黑虎洞石英脉型金矿为例,阐述石英脉型金矿构造背景、地质特征、矿体特征、矿物组合及围岩蚀变等。矿体受断裂控制,矿体呈脉状、似层状、透镜状展布,矿石矿物主要为黄铁矿,围岩蚀变主要有硅化、绢云母化、绿泥石化、碳酸盐化,其中硅化、黄铁矿化与金成矿关系密切。最后总结矿区内含金石英脉矿床成因和找矿标志,指明了找矿方向。     

新疆尉犁县胜利大道北金矿床地质特征及找矿标志

新疆尉犁县胜利大道北金矿床位于塔里木陆块之库鲁克塔格陆缘地块内。古远古代吕梁运动,区内发育大面积岩浆弧花岗岩,该酸性侵入岩携带含矿热液形成初始矿源层,晚志留-早泥盆世的区域构造、岩浆活动对初始矿化进行了叠加改造,形成了区内构造破碎带蚀变岩型金矿。矿体主要分布于断裂及断裂交汇部位的构造破碎蚀变带中。矿石自然类型主要为含金蚀变岩矿石及含金石英脉矿石。矿床工业类型为破碎带蚀变岩型金矿。矿石矿物为金,脉石矿物主要有石英、斜长石、钾长石、白云母、绢云母、萤石。岩石碎裂岩化、硅化、褐铁矿化、绢云母化是矿区最主要的蚀变类型,其中与金成矿关系密切的蚀变为碎裂岩化、绢英岩化、褐铁矿化。经研究该金矿床地质特征,认为区域侵入岩标志、矿床蚀变特征、构造及化探异常标志等可以作为矿区及区域找矿标志。     

湖南省平江县万古金矿区大塘冲矿段地质特征及找矿方向

万古金矿区大塘冲矿段位于万古金矿区东部,是近年来新设立的金矿勘查区。在野外地质调查基础上,对大塘冲矿段的矿脉、矿体及矿石特征进行了详细研究,厘定了矿床类型及成因,探索了成矿规律,并指出了进一步的找矿方向。研究表明,大塘冲矿段内含金矿脉受控于北西(西)向断裂破碎带,断裂破碎带由构造角砾岩、石英细脉及蚀变板岩组成,倾向北(北)东。矿石构造主要为块状构造、角砾状构造、条带状构造、板状构造等,矿石结构包括碎裂结构、角砾状结构、显微鳞片变晶结构、镶嵌结构等。矿石类型以石英脉型、蚀变破碎板岩型、构造角砾岩型及蚀变板岩型为主。大塘冲矿段矿床成因类型为受断裂控制的岩浆期后远成中低温热液型,矿体富集在舒缓波状弯曲、断裂分支部位;北西(西)向和近东西向断裂或层间滑脱带,硅化、绢云母化、黄铁矿化、毒砂矿化、辉锑矿化、褪色化较强地段和Au、As、Sb、Hg等元素的组合异常及金的重砂异常是重要的金找矿标志。14号矿脉深部是成矿有利地段,具有较大找矿潜力。     

步阴尾地区金矿地质特征及找矿标志

结合步阴尾地区相关地质勘探成果,对该区成矿地质背景、矿区地质特征、矿床形成条件及成因进行了详细分析,研究表明:①金矿的形成经历了后期构造及岩浆岩多期多次的反复作用,其过程处于多期多次反复强烈的构造活动中;②发现的3个金矿化体全部产于矿区北东走向断层破碎带中,矿体完全受构造控制。矿石品位在1.47g/t～2.21g/t,厚度在2.07m～2.11m;③该矿床为破碎带蚀变岩型金矿床,金矿受断裂破碎蚀变带控制,矿体的形态、产状与断裂蚀变带一致,矿体成脉状、透镜状,有分支复合的现象。在上述分析的基础上,总结该区矿床成因及找矿标志,对于类似矿床找矿具有一定的参考价值。     

内蒙古自治区翁牛特旗大座子山银多金属矿地质特征及找矿前景浅析

勘查区矿体多产于断裂构造带中,严格受断裂构造带控制,矿体呈脉状产出,其产状与断裂(蚀变破碎带)产状一致,矿体规模、矿化强度与断裂(带)规模相关—断裂带规模越大,其包含的矿体数量越多,单个矿体规模相对较大,而且矿化强度也相对较强,矿石品位较高,反之亦然。据此推断该矿床成因为构造控制矿的火山热液脉型矿床。     

黑龙江大新屯金及多金属矿床控矿条件及找矿标志探讨

通过研究大新屯金及多金属矿床的地层、矿石特征及围岩蚀变特征等,分析控矿条件,认为地层、构造及岩浆岩与成矿关系密切。其中,北宽河组为成矿提供了物质来源,促进成矿的发生;构造控矿明显,区内已发现的金、银及锑矿体均产于NW向断裂破碎带内,矿体主要分布在侵入岩体接触带中;浅成脉岩体为金及多金属矿床的形成提供了充足的成矿物质和热动力条件。本区共圈定矿（化）体21 条,其中,金矿（化）体17 条,锑矿体3 条,银矿体1 条,矿石类型主要为石英脉型。为了进一步开展深入找矿工作,建立了找矿标志,指出今后应围绕脉岩体内外接触带、碳酸盐化发育地段及化探前缘指示元素（As、Sb）富集部位寻找石英脉型及构造蚀变岩型金及多金属矿床。     

浅谈内蒙古恩和哈达金多金属地质特征及成因分析

恩和哈达金多金属矿位于内蒙古自治区额尔古纳市,矿床为受断裂构造控制的小型低品位薄层脉状蚀变岩型金矿。区共圈定5条薄层脉状金矿体,矿石类型为蚀变角砾岩型和石英脉型。     

China's Major Non-ferrous Metals Imports & Exports

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Zinc Production by Province in 2014

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80% of Chinese Firms Purchasing Overseas Mines Ended up in the Red

<正>Minmetals Resources acquired the world’s largest copper mine under construction for USD5.85 billion.One after another,listed companies Jien Nickle,China Molybdenum and Chihong Zinc and Germanium raised money to get involved in overseas mining projects…SOEs and private enterprises are engaged in a frenzy of overseas mine purchasing.A reporter with Economic     

Copper Processing Profit Dropped Sharply,Copper Consumption Will Face Impact in the Second Half of the Year

正Judging from China’s copper consumption field,the biggest consumption unit is electric power,which accounts for 47%of total consumption;it is followed by light industry sector,including household electrical appliance,machinery,durable goods and hardware etc,which accounts for 22%of total consumption;followed by transportation field,     

Central Geological Prospecting Fund Newly Added 16.47 Million Tonnes of Bauxite in 2013

正In 2013,the Central Geological Prospecting Fund(CGPF)Project newly discovered 15 ore fields,including 3 large above ore fields,and 5medium sized ore fields.The reporter learned from the recently published"Annual Report of Central Geological Prospecting Fund Project(2013)"that,from 2006 to 2013 the CGPF     

Manufacturers of Copper Tube for Central Air Conditioner Use Face Mounting Pressure in the Final Quarter of the Year

正This year,the investment growth rate of real estate industry continued to slow down,sold area of commercial housing also dropped significantly,which brought huge pressure to the domestic air conditioning manufactures.In the first half of the year,by relying on high growth in national financial expenditure,along with investment in public infrastructure     

Xinjiang Ranks No.1 in Production of Primary Aluminum in China

正Kang Yi,Honorary Chairman of China Nonferrous Metals Industry Association,said recently at the Forum on Development of the Non-ferrous Metals Industry in Central and Western China held in Zhengzhou that,as more and more electrolytic aluminum factories in Xinjiang came into operation,the electrolytic aluminum output of Xinjiang had reached2,275,000 tons in the first 7 months this year,     

Shenhuo Coal Industry and Electricity Power Completed800,000 t/a Aluminum Project in Xinjiang

正"Xinjiang project has been completed according to schedule,but total completion and total start of production are two different concepts,after completion it still needs a gradual process of reaching production target."On the morning of November 3,Shenhuo Coal Industry and Electricity Power told investors the above statement on the investor interaction platform.     

Guangdong Metal Transaction Center has Become the Second Largest Precious Metal Transaction Platform Nationwide

正The reporter learned from Guangdong Province Precious Metal Transaction Center that in 2013the Center maintained healthy development momentum,and had become the second largest precious metal transaction platform in China in terms of market size;currently Guangdong is quickening steps of financial innovation for the Center,aiming to build a transaction center with international core competitiveness.     

Seven Rare Earth Projects Involving Close to 3 Billion Yuan Investment Landed In the HighTech Zone

正On May 22,Baotou Rare Earth Industry Cooperation Consultation MeetingProject Agreement-signing Ceremony was held in Ningbo,nearly 40 enterprises from Ningbo,Guangdong,Hunan,and Shanxi participated in project consultation.After multi-lateral communication,agreements were signed for a total of 7 rare earth projects successfully.