胶西北招远南隐伏构造活动序次：地球物理启示

胶东半岛金矿床的产出严格受 NE—NNE 向断裂带控制。招平断裂带是胶东半岛规模最大的 NE— NNE 向控矿断裂带,但是在其招远南至道头镇区段尚未发现成规模金矿床。为此,分析了该区已知金矿床金成矿地质背景和含矿地质体的地球物理特征,解析了区域布格重力异常,厘清了隐伏低密度构造带、玲珑岩体、招平断裂带、郭家店岩体和近 EW 向隐伏构造带 5 组控矿地质体的空间展布和时间顺序特征。其中,近 EW 向隐伏构造带控制了玲珑岩体的展布,招平断裂切割了早期生成的玲珑岩体,并控制了郭家店岩体的范围,近 EW 向构造带控制了晚期生成的花岗岩体的分布。成矿后形成的隐伏低密度带与相对贫矿区段范围对应。可控源音频大地电磁探测和钻孔验证揭示的 349～905 m 金矿化特征表明近 EW 向构造带存在招平断裂带金成矿之后再活化情况。高温底侵岩体熔离了早期生成的金元素,并裹挟至地质体交界处卸载成矿。隐伏金矿床的形成受 NE 向招平断裂和基底 EW 向构造带共同控制,其交汇部位是金矿体产出的有利空间。     

胶西北招远南隐伏构造活动序次：地球物理启示

胶东半岛金矿床的产出严格受 NE—NNE 向断裂带控制。招平断裂带是胶东半岛规模最大的 NE— NNE 向控矿断裂带,但是在其招远南至道头镇区段尚未发现成规模金矿床。为此,分析了该区已知金矿床金成矿地质背景和含矿地质体的地球物理特征,解析了区域布格重力异常,厘清了隐伏低密度构造带、玲珑岩体、招平断裂带、郭家店岩体和近 EW 向隐伏构造带 5 组控矿地质体的空间展布和时间顺序特征。其中,近 EW 向隐伏构造带控制了玲珑岩体的展布,招平断裂切割了早期生成的玲珑岩体,并控制了郭家店岩体的范围,近 EW 向构造带控制了晚期生成的花岗岩体的分布。成矿后形成的隐伏低密度带与相对贫矿区段范围对应。可控源音频大地电磁探测和钻孔验证揭示的 349～905 m 金矿化特征表明近 EW 向构造带存在招平断裂带金成矿之后再活化情况。高温底侵岩体熔离了早期生成的金元素,并裹挟至地质体交界处卸载成矿。隐伏金矿床的形成受 NE 向招平断裂和基底 EW 向构造带共同控制,其交汇部位是金矿体产出的有利空间。     

中家山金矿床成矿特征及构造控矿研究

中家山金矿位于郯庐断裂带皖东段北部西侧，金的成矿作用与区域构造演化关系密切，构造对矿床具多级控制特点；（1）郯庐断裂带是区域上一级控矿构造，控制着金矿矿带的空间展布；（2）燃灯-鹿塘断裂，大溪河-总铺断裂为引导成矿流体运移的二级控矿构造；（3）中家山，马山，凤凰山构造破碎带为主要的容矿构造。     

中基性脉岩与铀成矿的关系

总结了中基性脉岩与铀成矿关系,指出中基性脉岩的铀成矿作用主要表现为:可能提供铀成矿物质来源(尚需进一步研究)、流体来源、重要的矿化剂、地球化学环境、控制铀矿床的定位等。     

中基性脉岩与铀成矿的关系

总结了中基性脉岩与铀成矿关系,指出中基性脉岩的铀成矿作用主要表现为:可能提供铀成矿物质来源(尚需进一步研究)、流体来源、重要的矿化剂、地球化学环境、控制铀矿床的定位等。     

河西金矿深部望儿山断裂带成矿规律研究

望儿山断裂带是焦家断裂带的次级断裂带,在招远控矿、容矿断裂带中仅次于焦家断裂带和招平断裂带,位列第三.通过对河西金矿深部望儿山断裂带成矿规律的研究,在宏观上指出了有利成矿的区段和部位,为下一步的找矿工作指明了方向.     

江南造山带东段北缘鄣公山地区成矿地质特征及成矿条件研究

鄣公山地区属江南钨锑金锡多金属成矿带九岭-鄣公山钨锑金成矿亚带,对矿床(点)成矿地质特征、金属元素分布特征、地球化学特征、控矿条件研究显示:金和铜铅锌多金属矿化受溪口岩群和瑶里-江潭构造基性岩带控制,产于韧性变形带叠加的后期脆性构造破碎带中,并赋存于次级断裂和裂隙中;锑、钨、钼矿化与燕山期酸性岩浆热液活动关系密切,赋存于岩体中及内外接触带;金、钨、锡、铋为研究区优势成矿金属;鄣源基性岩和新元古界地层(包括溪口岩群和双桥山群),具壳幔混源特征,暗示壳幔相互作用参与利于成矿,中酸性脉岩类形成时代基本为晚侏罗-早白垩世,属燕山期中酸性侵入岩体同一岩浆演化晚期产物,基性脉岩具与晚白垩世玄武岩源岩浆特征和成因亲缘性,与陆壳引张构造背景密切相关;韧性变形带叠加的次级断裂系统形成的蚀变破碎带或挤压片理化带中的后期破碎带,及挤压破碎带两侧的张性破碎带是聚矿有利部位,区内以燕山期为主的成矿特点,有早期动热变质成矿与后期岩浆热液改造叠加成矿特征。     

招平金矿带陡崖曹家矿区综合勘查模型及成矿预测

招平金矿带在其长120 km的断裂带范围内拥有金资源储量达1 400余吨之多,其南段盖层之下为现阶段的找矿热点区域,但盖层下的矿化信息难以穿透盖层到达地表。因而有必要针对性地研究具有测深能力的地球物理方法及其勘查模型,以解决覆盖区找矿难题。结合区内地质工作成果,分析并总结了招平金矿带岩矿石的物性特征,厘清了控制金矿体赋存因素的综合地球物理异常表征,确立了金矿体、赋矿构造和地球物理性质的映射关系,构建了覆盖区深部金矿综合地球物理勘查模型。以陡崖曹家矿区为例,通过分析招平金矿带内多元地质特征,应用多层次地球物理技术组合探测方法,在盖层下定位预测了2处金成矿靶区,且该2处靶区均得到了钻孔验证。综合研究表明:依据岩矿石的物性特征和已知金矿体的地球物理异常特征构建的覆盖区深部金矿综合地球物理勘查模型,有助于提高陡崖曹家矿区盖层下矿体的找矿效率,对于类似地区找矿工作也有一定的参考价值。     

招平金矿带半壁店矿区地球物理勘查模型及成矿预测

招平金矿带是我国胶东金矿集区的重要金成矿带。在该金矿带长百余千米的断裂带内及其旁侧已探明金资源储量达千余吨,金矿带中南段覆盖区深部是下一步找矿的核心区域,但覆盖层下的矿化信息难以获取,实现找矿突破难度较大。为此,分析了招平金矿带内不同级别的控矿因素,分别从控矿断裂构造、赋矿蚀变花岗岩、矿化体等3个方面分析了控矿因素的物性特征,厘清了控矿因素的综合地球物理异常表征,明确了矿化体、控矿因素与地球物理异常之间的对应关系,构建了覆盖区深部矿体综合地球物理勘查模型。通过多元地质特征和多层次地球物理技术方法组合分析,定位预测了一处深部成矿靶区,并进行了钻探验证。研究表明：根据区内已知金矿体的物性特征和综合地球物理找矿标志构建的覆盖区深部蚀变岩型金矿综合地球物理勘查模型,有助于解决该金矿带覆盖区深部找矿难题,可有效提高覆盖区深部找矿效率。     

河南省桐柏县老湾岩体与老湾金矿带的成矿关系

老湾金矿带是桐柏-大别山地区重要的金银成矿带,也是我国重要的变质碎屑岩型金矿或矿带之一。老湾岩体与成矿带的成矿关系极为密切,它不仅为老湾金矿带提供了成矿热液,而且提供了部分成矿物质。通过对两微量元素含量特征、包裹体特征、同位素特征研究认为,改造、重熔原生含金建造,老湾岩体的成矿作用主要是为金矿的形成提供热动力,促使龟山岩组矿源层中的金熔出、活化、迁移,将矿质聚集在岩浆期后的热液中,运移至适当部位沉淀成矿。     

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     

Annual Report analysis of Chinese rare earth-related listed companies in 2013

<正>Chinese rare earth-related listed companies have published their 2013 annual reports.It can be understood from their reports that production and operation activities of Chinese rare earth-related companies were still heavily affected by macro economy and industrial policies.They basically followed the steps of national economy.In 2013,world economy recovered slowly but the economy     

Market opportunities and challenges for rare earth polishing powder

正1.Status of rare earth polishing powder Rare earth polishing powder with high content of cerium oxide began to replace iron oxide for glass polishing and became one of the key materials in glass polishing process since 1940.Compared with traditional iron oxide,rare earth polishing powder has many advantages,such as fast polishing rate,high polishing quality and long service life.It can achieve good surface quality and improve operation conditions.For example,in lens polishing,the polishing work that cerium     

Baotou Research Institute of Rare Earths developed a new RE alloy preparation technology

正Pyrometallurgy Laboratory of Baotou Research Institute of Rare Earths had independently developed a new preparation technology of rare earth alloy for NdFeB.The alloy can remarkably enhance the coercivity of NdFeB magnet but also evidently reduce the production cost of the magnet.The new master alloy was prepared in the kA pilot-scale electrolytic cell by the independent technology.The rare earth master alloy can be used as the raw material for NdFeB.Compared     

Market and recycling of NiMH battery

<正>Market status and future trend of NiMH battery1.Global market of small NiMH battery Global market size of small NiMH batteries declined year on year since 2011.The trend will continue to 2018,at the rate of 5%to 10%annually.Demand for small NiMH batteries will be stable gradually.Many electrical apparatuses are powered by the built-in lithium battery today,which is the main reason for the shrunk market of small NiMH batteries.But,for some products,small NiMH     

China rare earth market review

正September 1-10,2014 Affected by the National Day holiday,rare earth transaction was stagnant and the market showed a weak steady state.As there was no good news for downstream market,some products with flat demand would likely rally slightly for some time to     

2014 second batch of rare earth quota released

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矿用防爆轴流对旋主要通风机叶片ANSYS模态分析及应用

高效节能矿用防爆对旋主要通风机的叶片是主要通风机运行的关键部件,叶片在运行时不断受到气流的作用力,从而使叶片产生振动,当叶片振动的频率与叶片的固有频率接近时,容易产生共振从而导致叶片的断裂。一旦叶片断裂时,对主要通风机的安全运行产生致命的影响,从而导致矿山、化工等企业发生重大事故,将会产生不可估量的损失。基于有限元分析软件ANSYS,对高效节能矿用防爆轴流对旋主要通风机叶片进行模态分析及产生对应的六阶模态频率,对主要通风机叶片的运行频率、固有频率及产生的共振问题进行了原理分析,并且解决了叶片频率共振的问题,从而为主要通风机叶片结构设计提供理论依据,并对主要通风机叶片的安全运行提供保障。     

2013 NdFeB export analysis

<正>China totally exported nearly 24,000 tonsof NdFeB products during 201 3,including 18,825 tons of permanent magnet,valued USD 1.34 billion at an average price of 71.4 USD/kg;3,277 tons of NdFeB magnetic powder,valued USD 1 01 million at an average price of 30.9 USD/kg;1,334 tons of strip casting ribbon,with total export value of USD 74million at an average price of 55.3 USD/kg;and 586