甘肃阳山金矿带泥山矿段508号脉成矿作用浅析

阳山金矿泥山矿段与花岗岩类有关的金矿化是该矿段重要的金矿化类型,通过对斜长花岗斑岩脉及其矿体的研究,探讨此类金矿的基本特征,得出该矿化类型受控于燕山期花岗岩体。区内岩体的分布与构造关系密切,并受断裂的控制,岩脉走向呈近EW向,产出规模一般较小,多呈脉状产出,少量为岩株。岩石类型为中酸性岩,岩性主要为斜长花岗斑岩。通过对斜长花岗斑岩脉的矿化蚀变特征及含金性进行分析研究,认为泥山矿段508号脉成矿过程为含矿物质迁移、富集过程。     

甘肃省瓜州县东巴图槽子沟铁矿地质特征、找矿标志及矿床成因浅谈

研究区位于瓜州县东巴兔村槽子沟地区。大地构造位置属于塔里木地台敦煌地轴三危山拱断束东巴兔山断块,其南与祁连山早古生代裂谷带相接,其北与北山古生代裂谷带相邻。研究区矿体主要赋存在敦煌群第二岩组第二岩段(Anchdn~(2-2))地层中的黑云斜长片麻岩和钾长混合岩中,严格受断裂构造控制,矿体形态以似层状、透镜状、不规则状等产出。主要找矿标志为具铁染的断裂构造破碎带;磁异常可以指导找矿。研究区内的矿床成因确定为沉积变质型-后期具构造和热液改造成因的层控矿床。     

江西宝山钨多金属矿床“一体多位”成矿定位模式

宝山钨多金属矿地处南岭东西向构造岩浆带铅厂南北向断陷带,宝山燕山期花岗岩体侵位于石炭系碳酸盐岩-含钙碎屑岩中,沿接触带形成套筒状夕卡岩蚀变矿化环带。花岗岩内出现浸染状钨钼矿化,岩体顶部接触带产出帽壳状夕卡岩钨多金属矿化,接触带上部产出项圈状夕卡岩钨多金属矿化,接触带下部外侧产出似层状夕卡岩钨钼多金属矿化,接触带深部梓山组底部可能产出叠生富硫化物多金属矿化,接触带外侧构造裂隙有脉状钼铅锌矿化,构成以岩体为中心接触带多个部位矿化的"一体多位"成矿定位模式。     

河北康保万隆店金矿床地质特征及找矿标志

万隆店金矿床(体)赋存于太古界红旗营子群第二岩组第一岩性段底部石墨(含石墨)黑云斜长片麻岩和石墨(含石墨)角闪斜长片麻岩中,矿体主要呈脉状产出.矿石的工业类型主要为石英脉型,少量为构造带硅化蚀变岩型.金主要以银金矿和自然金出现.成矿受地层、构造和岩浆岩控制明显.矿床成矿物质来自深部岩浆热液及围岩,属多期次叠加的受构造控制的石英脉型金矿.地层和构造是主要找矿标志.     

江西宝山钨多金属矿床地质特征及矿化富集规律探讨

江西宝山夕卡岩型钨多金属矿床成矿受宝山花岗岩株与石炭系黄龙组-船山组接触带控制,矿体定位、矿化富集与花岗岩株侵位方向、花岗岩相、围岩岩性、接触带凹槽构造关系密切。矿区分通天岩、茅草沟、笔架山、铁石岭等矿段。矿区已探采的主要工业矿体产于通天岩和茅草沟矿段,分为上部矿体和深部矿体。上部矿体受接触带凹槽和断裂构造复合控制,属接触交代和热液充填复合成矿,硫化物金属矿化强,白钨矿化相对较弱,矿化随深度变化趋势不明显;深部矿体产于接触带夕卡岩体内,属典型的夕卡岩矿体,以白钨矿化为主,矿化随深度的减小总体呈减弱之势。尽管成矿元素的矿化富集呈现出由北西向南东方向减弱的趋势,深部找矿潜力总体上不容乐观,但不排除茅草沟东南方向深部存在赋矿"凹槽"的可能性。     

赣东北桃源铜矿床地质特征及成因探讨

桃源铜矿位于江南地体与华夏地体碰撞对接带的萍乡-广丰构造混杂岩带北侧的白石山次级地体中,成因类型为受火山机构控制的变质热液型铜矿。矿区矿化类型多样,有受火山机构控制的层状铜矿化和受放射状构造裂隙控制的构造破碎带型铜矿化,蚀变类型有硅化、碳酸盐化、绢云母化、重晶石化、辉铜矿化、黄铜矿化、黄铁矿化及近地表的氧化铜蓝。文章通过查阅区内以往地质成果资料,并试图以这些资料为基础,总结了桃源铜矿床地质特征,并就其矿床成因进行探讨,同时指出了几点找矿标志,旨在为区内地质找矿提供某些指导意义。     

甘肃省瓜州县小金沟金矿地质特征及矿床成因分析

瓜州县小金沟金矿处于塔里木板块敦煌地块北缘铁、金、稀有金属成矿带—新金厂—金庙井金、铁、稀有金属成矿带,区内构造发育,岩浆活动频繁,成矿条件较好,沿羊圈沟-西尖山-华窑山大断裂南北两侧次级断裂挤压破碎带和侵入岩体分布。勘查区含矿围岩为角闪片岩、斜长角闪片麻岩,金矿(化)体赋存于石英脉和接触蚀变带中。矿床成因属于华力西晚期中低温变质热液型金矿床。本文对小金沟金矿地质特征及矿床成因进行了分析探讨。     

河北省阜平县南庄旺一带金、银多金属矿地质特征

南庄旺一带蚀变、矿化主要受NW向及其次级断裂构造控制,矿床成因类型为高温热液矿床,矿区内发现多条矿化蚀变带,其中以Ⅱ号蚀变矿化带为主,Ⅱ号矿化蚀变带位于北西向断裂构造带,长1900米,宽10-40米,最宽处可达100余米,总体走向325°,北东倾,倾角70°左右,局部地段近于直立或反倾。矿石类型主要为金属硫化物-破碎带蚀变岩型。     

甘肃省瓜州县小金沟金矿地质特征及矿床成因分析

瓜州县小金沟金矿处于塔里木板块敦煌地块北缘铁、金、稀有金属成矿带—新金厂—金庙井金、铁、稀有金属成矿带,区内构造发育,岩浆活动频繁,成矿条件较好,沿羊圈沟-西尖山-华窑山大断裂南北两侧次级断裂挤压破碎带和侵入岩体分布。勘查区含矿围岩为角闪片岩、斜长角闪片麻岩,金矿(化)体赋存于石英脉和接触蚀变带中。矿床成因属于华力西晚期中低温变质热液型金矿床。本文对小金沟金矿地质特征及矿床成因进行了分析探讨。     

内蒙古自治区额济纳旗盘陀山东金多金属矿床地质特征及找矿前景研究

额济纳旗盘陀山东金多金属矿根据矿化类型可分为两类:一是受断裂破碎带控制的,以石英脉型和构造蚀变岩型金矿床为主;二是受硅质脉和辉长岩与围岩的接触带控制,以蚀变岩型金矿床为主,但该类型在矿区内不发育;1:5万水系沉积物异常以及矿区大比例尺土壤剖面测量结果显示,矿区内中低温元素Cu、Pb、Zn、Ag、Au、As、Sb和铁族元素Ni、Co、Mn异常集中出现,并伴随Au矿化,经异常查证,发现金矿(化)体3条,找矿前景良好。     

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.