青海都兰果洛龙洼金矿床地质特征及控矿因素浅析

果洛龙洼金矿位于东昆仑南坡早古生代洋壳盆地东段北侧,是近年来在东昆仑地区新发现的韧性剪切带型金矿床。通过分析果洛龙洼金矿地质特征及控矿因素,对进一步开展找矿具有一定的指导意义。     

青海果洛龙洼金矿床同位素特征及成因

果洛龙洼金矿产于东昆仑造山带万保沟群韧性剪切带中,矿化围岩为绿泥石千枚岩和硅质板岩等,各种脉岩较发育。矿化类型有石英脉型、蚀变千枚岩型、构造破碎带型和脉岩型等。矿石矿物组成简单,属少硫化物型。硫、铅同位素组成表明,果洛龙洼金矿床与东昆仑成矿区大多数金矿床相似,属于比较典型的造山带型金矿,是一个与华力西-印支期中酸性岩浆活动有关的中温热液型金矿床。     

青海果洛龙洼金矿地质特征及找矿潜力分析

东昆仑地区是青海省重要的贵金属、有色金属及黑色金属成矿带,其金矿储量在青海省矿产资源中占有显著的地位。果洛龙洼金矿床位于东昆仑造山带东段,为一韧性剪切带型金矿床,也是近年来新发现的又一具有重要经济价值的金矿床,目前在该矿床已发现7条金矿化体,找矿潜力较大。通过对该矿床地质特征及找矿潜力进行分析,认为该区矿化体类型主要是以黄铁矿为主的硫化物石英脉及硫化物蚀变岩型矿体,矿石矿物以黄铁矿和黄铜矿为主,围岩蚀变主要为硅化、绢云母化、黄铁矿化和绿泥石化。根据矿区出现的脉状矿化、细脉侵染型矿化特征,矿区剪切带成矿系统中具有石英脉型-构造蚀变岩型金矿成矿系列,对在该地区深部及外围的进一步找矿,扩大矿床规模等具有重要意义。     

青海省都兰县果洛龙洼金矿床地质特征及成因探讨

果洛龙洼金矿床是近年在东昆仑造山带东段新发现的一处-中型金矿床,通过对矿床的成矿地质条件、矿床地质特征,成矿机理的分析和研究,认为该矿床由早期形成的热水沉积建造提供主要成矿物质来源,在后期动力挤压、变形、变质作用下,成矿物质富集,形成含金石英脉型、构造蚀变岩型、具有典型的韧性剪切带型金矿床特点。     

青海果洛龙洼金矿床成因探讨及成矿模式构建

东昆仑构造带是我国著名的成矿带之一,素有"金腰带"之称,是我国重要的矿产资源基地。果洛龙洼金矿床是东昆仑东段一个典型的大型金矿床,虽然该矿床前期已经投入较多的找矿勘查工作,但是矿床成因研究不足,严重制约了该区找矿工作的突破。本文在研究区域地质演化背景和矿床地质特征的基础上,认为该矿床主要受断裂控制,矿体产于纳赤台群千糜岩中,矿石类型以石英脉型为主。利用S、Pb、H-O同位素示踪手段确定该矿床为形成于造山过程中的岩浆热液石英脉型金矿床。矿床成因类型的确定为该矿床下一步找矿工作提供了方向,同时也为整个东昆仑地区同类型金矿找矿工作提供借鉴。     

东昆仑造山带金矿床控矿因素及找矿方向分析

东昆仑造山带自北向南具有较好的金矿化特征,与成矿地质背景,成矿物质来源,成矿后剥蚀保存条件密切相关。该带的矿床(点)数量和规模差异较大,对金矿床,北巴颜喀拉造山带成矿带上来的金矿床分布规模较大,昆仑复合拼贴成矿带在基底隆起花岗岩成矿带中,其中五龙沟金矿床、瑙木浑、巴隆金矿点及诸多矿化线索,可能与剥蚀后更高程度的矿化有关。     

青海驼路沟钴矿床找矿前景分析

驼路沟钴矿床位于东昆仑南部昆南陆缘活动造山带的中段,是近年来发现的容矿于奥陶-志留纪火山-沉积岩系中的喷流沉积型钴矿床。东昆仑造山带是一个多旋回造山带,多期变形-变质作用使该矿床经历了成矿及成矿后的改造作用,使矿体分布和成因复杂化。本文从矿床地质特征、地球化学异常及其成因,分析其找矿前景,认为南矿带矿段间及深部、北矿带西段和外围AS04异常区找矿潜力大、前景较好,通过进一步工作,有望使该矿床达到大型矿床规模。     

东昆仑地区洪水河口金矿地质特征及找矿潜力分析

洪水河口金矿位于柴达木盆地南缘,东昆中隆起带,属于东昆仑重要的金、铁、铅、锌成矿带,当前矿区已圈定出7个NE向金矿化体,呈斜列式展布,含矿岩性为毒砂黄铁矿化蚀变碎裂岩,容矿围岩为印支期花岗闪长岩及闪长玢岩。结合洪水河口金矿成矿地质特征、矿化体特征及物化探异常特征,综合研究得出控矿因素和找矿标志,探讨了矿床成因,通过与典型造山型金矿特征对比,洪水河口金矿属中成造山型金矿,在综合研究区域成矿规律的基础上,指出研究区金矿具有巨大的找矿潜力。     

东昆仑造山带向阳沟金矿床地质-化探综合找矿模型及找矿效果

向阳沟金矿床位于东昆仑造山带西段，区域内已发现大灶火金矿床、黑刺沟金矿床等。矿体主要赋存于不同时代碎屑岩接触部位或同一时代碎屑岩与碳酸岩接触部位的破碎蚀变带内，破碎蚀变带为含矿流体提供运移通道及沉淀场所。断裂交会部位，断裂与有利岩体、地层交会部位及断裂转折端等膨胀扩容区为重要成矿部位。1∶10 000土壤地球化学测量圈定了综合异常8处，认为Au最大值大于50.00×10^-9的地段是重要的地球化学找矿位置。在充分总结找矿标志的基础上，建立地质-化探综合找矿模型，在向阳沟金矿区圈定了找矿靶区6处，通过查证，共圈定矿体17条、矿化体37条，取得了找矿突破。矿(化)体长80～320 m,真厚度0.82～6.46 m,金品位1.16×10^-6～14.30×10^-6。综上所述，该综合找矿模型适用于向阳沟金矿床，可为区域内寻找同类矿床提供借鉴。     

衍生指数法在阳山金矿激电测深中的应用

阳山金矿为甘肃省南部的一大型类卡林型金矿,大地构造位置处于扬子、印度和华北板块汇聚形成的倒三角形构造域北缘,松潘-甘孜造山带与秦岭造山带结合部位。含金地质体主要为黑色黄铁矿化碳质千枚岩、黄铁矿化碎裂蚀变灰岩及黄铁矿化斜长花岗斑岩,其中黄铁矿呈他形、细-微细粒浸染状分布,与金矿化关系密切,是重要的找矿标志,局部地段花岗斑岩金矿化强烈,经过岩石电性参数测定显示具有低阻高极化的电性特征。衍生指数法激电测深在找水方面应用较多,并且富水地层与金属矿化建造和破碎蚀变带等均具有低阻高极化的电性特征,所以本次工作尝试利用衍生指数法解释阳山金矿的测深资料,推断地下低阻高极化异常体赋存状态并为重型山地工程布设提供依据。通过衍生指数法解释2条测深剖面并成功布设验证钻孔的工程,结果表明,该方法在阳山金矿是一种切实可行的找矿方法。     

熔炼次数对M17返回料合金成分、组织和性能的影响

实验结果表明,M17铸造高温合金(%:0.16C、8.79Cr、5.79A1、4.93Ti、3.29Mo、15.20Co、0.78V、0.015B、0.073Zr、0.002S、0.001P、0.001 1O、0.001 0N)经25 kg真空感应炉返回重熔后,Si含量随重熔次数的增加而略有增加,合金中主要元素和其它杂质元素S、P、H的含量变化不大,而氧、氮略有增加;合金中初生碳化物由新合金中的草书体逐渐向返回合金块状转变,初生碳化物的遗传性堵塞合金凝固时的补缩通道,使返回料合金的疏松倾向增大,高温塑性下降较大。     

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.