武当地区与耀岭河组有关的金矿控矿构造特征及找矿方向

武当地区与耀岭河组变质火山岩系有关的金矿,受早期伸展机制下的韧性滑脱构造面控制,后期的挤压推覆、走滑剪切构造对金矿进行叠加改造,晚期的脆性伸展构造为金矿的容矿构造.在此基础上建立了构造成矿模式,并提出了应围绕耀岭河组滑脱构造面及相关的剪切构造带等构造有利部位找矿的方向.     

鄂西北地区耀岭河群同位素年龄讨论

木文据耀岭河群变质火山岩中，获得的Ｓｍ—Ｎｄ等时线年龄值Ｒｂ—Ｓｒ等时线年龄值，单锆石２０６Ｐｂ／２３８Ｕ的年龄值并结合Ｐｂ、Ｏ同位素研究认为本区因多次构造运动的影响，使同位素均一化，Ｓｍ—Ｎｄ及Ｒｂ—Ｓｒ部分等时线年龄偏低，而单锆石的年龄值，证明兴凯运动早期曾在本区产生热事件。结合区域地质资料，本区耀岭河群的年龄应在７１１—８０５．８Ｍａ之间。     

湖北省佘家院银矿铅同位素特征及矿床成因探讨

通过对佘家院银矿铅同位素特征进行详细研究,认为矿石铅同位素组成及来源不同于下覆地层耀岭河组火山岩及赋矿地层陡山沱组,而与上覆地层寒武系底部相似,从而得出寒武系底部地层是矿床初始矿源层的结论,并结合已有的研究成果,对矿床成因进行了探讨.     

武当地区的元古宙

武当地区的元古宙,其研究内容,主要指陡山沱组以下的变质火山岩系。耀岭河群自上而下划分为吴家梁组、石门沟组及高庙组,底部紫色碎屑岩对应于莲沱组相应沉积物,主体是一套海相火山岩,组成细碧—角斑岩建造,底部具陆相特征,时限推定为700—850Ma之间,对应于新元古代的覆冰纪。原武当山群的杨坪组、档鱼河组及楼台组重新解体。杨坪组改称杨坪群,时限推定在850～1000Ma之间,对应于新元古代的加宽纪;档鱼河组及楼台组新称武当山群,时限推定在1100～2000Ma之间,属古—中元古代,为一套陆相火山喷发岩。晋宁运动在该区有较强的表现,澄江运动次之。杨坪群之底为一古韧性剪切滑脱面,印支得到加强,耀岭河群顶底韧性剪切滑脱带主要属印支期产物。     

鄂西北耀岭河组超贫磁铁矿地质特征及找矿前景

通过近几年的工作所取得的资料及在系统收集整理、综合分析前人资料的基础上,归纳总结鄂西北地区南华系耀岭河组超贫磁铁矿分布规律及成矿地质条件,探讨耀岭河组超贫磁铁矿的找矿前景。耀岭河组上段含铁岩系与贫磁铁矿体产出受火山喷发沉积控制,同时矿体富集又受火山喷发中心控制。耀岭河组上段火山喷发沉积岩具有旋回韵律性,旋回开始以喷溢沉积铁为主,晚期以爆发沉积铁为主,火山中心、近火山喷溢—爆发沉积的富钠质基性火山喷溢亚相的基性熔岩和爆发亚相的富钾贫钠的凝灰岩具有铁的成矿专属性,Fe含量一般与S iO2含量呈反比例的关系,属火山喷发沉积铁矿,类似于中国大红山式铁矿。鄂西北地区分布广泛的耀岭河组变质火山岩系为寻找超贫磁铁矿提供了巨大的找矿前景。     

湖北省佘家院银矿铅同位素特征及矿床成因探讨

通过对佘家院银矿铅同位素特征进行详细研究，认为矿石铅同位素组成及来源不同于下覆地层耀岭河组火山岩及赋矿地层陡山沱组，而与上覆地层寒武系底部相似，从而得出寒武系底部地层是矿床初始矿源层的结论，并结合已有的研究成果，对矿床成因进行了探讨。     

鄂西北北部耀岭河群变火山岩堆积序列

晚元古代耀岭河群火山岩可分为熔岩相和火山碎屑岩相。熔岩相以玄武质熔岩为主,在火山口附近有少量酸性熔岩。火山碎屑岩相由火山碎屑涌流堆积、火山碎屑流堆积和空落火山碎屑堆积组成。在近火山口的大山碎屑层序的底部有集块岩和岩块角砾分布。     

耀岭河群地球化学特征及其意义

笔者通过地球化学经典国解和参数研究了耀岭河群基性火山岩的地球化学特征、构造环境、物源及岩石成因。研究表明，该基性火山岩为稳定－半稳定环境下的张性岩套，喷发物源可能是经原始地幔交代的富集型洋中脊玄武岩，具地慢热栓的特点，显示古板块分别向西南和北东方向扩张。其构造环境属继承早期陆内裂谷发展而成边缘海盆地的大陆边缘裂谷带。     

鄂西北汉江北部与耀岭河群有关的金矿成矿条件研究

耀岭河群石门沟组的变质火山岩是有利产金的层位。金的成矿温度约210°～230℃,盐度4.2～12.3wt％。金矿成矿作用经三个阶级的流体活动。成矿流体的组成,以岩浆水和变质水为主,其次是大气降水,化学类型为K~+～Na~+—Ca~(++)—Mg~(++)—F~-—Cl~-型。同位素特征反映成矿物质来自地壳深部。成矿物质以金硫(氯)络合物形式迁移,部分金呈硅质凝胶迁移。金矿床(点)的产出受构造控制。     

南秦岭武当隆起构造特征、控矿作用及找矿方向

南秦岭武当隆起区内存在着印支造山期前的顺层韧性剪切构造和近南北向构造,以及印支造山期造山运动形成近东西向挤压逆冲推覆构造。这些不同的构造类型分别控制着武当隆起构造中的银金矿、多金属矿的分布及成矿的富集。顺层韧性剪切构造控制银金矿、多金属矿,沿构造层呈层状或似层状分布;南北向滑覆构造使顺层状的蚀变带在背斜顶部加厚,成矿物质富集;挤压推覆构造使得成矿物质重新富集。建议今后加强武当隆起西缘、武当岩群下部变火山岩组与上部变沉积岩组之间,耀岭河组与陡山沱组之间的顺层滑脱剪切带的找矿。同时应注意对近南北向构造的研究。     

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     

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.     

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.     

Current situation and future trend of China rare earth luminescent material industry

<正>Rare earth luminescent material is one of the most important application sectors of rare earths.China enjoys the exceptional advantage to develop rare earth luminescent material for its abundant rare earth resources.After several decades'endeavor,China's rare earth luminescent material industry,headed by rare earth phosphor for lamp and LED and high efficient rare earth energy-saving light source,has been gradually developed into a scale industry.China has become a major production base of rare earth phosphor for lamps and rare earth     

China rare earth market review

正June 1~10,2014Rare earth market remained weak.Quoted price of rare earth products was similar to that in May.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,polishing powder and ceramic industries remained inactive.Demand from downstream industry was soft.Consumers purchased on their needs.Suppliers had strong intention to sell.Prices of rare earth products     

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     

铜熔炼中锍品位对杂质元素分配行为的影响

借助于多相、多成分系统中平衡计算的手段，开发出微量元素砷、锑、铋及伴生元素铅、锌等在铜熔炼中分配行为的计算机模型。利用该模型对铜熔炼过程进行计算机模拟，分析了冰铜品位对砷、锑、铋、铅和锌等杂质元素的分压、活度系数及它们在冰铜、炉渣和气相中分配率的影响，并讨论其热力学分析结果对生产实践的指导意义。     

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