期刊文献+
共找到7篇文章
< 1 >
每页显示 20 50 100
九江武山铜矿南矿带深部矿体特征分析——以-400 m标高以下8Cu矿体为例 被引量:2
1
作者 吴火星 董宜勇 +2 位作者 冯道水 陈志辉 姜平 《东华理工大学学报(自然科学版)》 CAS 2017年第1期29-35,共7页
武山铜矿床是九瑞矿集区内著名的大型铜矿床之一,以该矿区区域地质特征与矿床地质特征为依据,结合深部详查钻探对矿区南矿带-400 m以下8Cu矿体形态、产状变化特征、矿石特征及其富集规律以及成矿有关的斑岩体形态特征的控制,进一步对8C... 武山铜矿床是九瑞矿集区内著名的大型铜矿床之一,以该矿区区域地质特征与矿床地质特征为依据,结合深部详查钻探对矿区南矿带-400 m以下8Cu矿体形态、产状变化特征、矿石特征及其富集规律以及成矿有关的斑岩体形态特征的控制,进一步对8Cu矿体特征进行归纳与总结。随着与成矿紧密相关的碳酸盐岩地层的揭穿,表明8Cu矿体向深部延伸随碳酸盐岩地层控制尖灭而尖灭。通过深部与浅部相关成矿要素与预测要素的对比,结合矿区成矿预测模式与机理,积极寻找接替资源,建议进一步向矿区深部寻找斑岩型矿床,为本区找矿工作指明方向。 展开更多
关键词 铜矿床 8Cu 矿体特征 南矿带 武山
下载PDF
小秦岭金成矿区南矿带构造控矿规律和矿床定位样式 被引量:9
2
作者 王晋定 王大钊 +4 位作者 詹小飞 魏俊浩 肖鸿 李欢 黄啸坤 《大地构造与成矿学》 EI CAS CSCD 北大核心 2018年第6期1064-1077,共14页
小秦岭金成矿区是我国第二大金矿床集中区,南矿带是该区大中型金矿最集中的矿带,矿带内金矿的形成、演化与分布严格受构造,尤其是断裂构造的控制。通过对桐峪金矿床、东闯金矿床、文峪金矿床、杨砦峪金矿床等典型矿床的研究,建立了小秦... 小秦岭金成矿区是我国第二大金矿床集中区,南矿带是该区大中型金矿最集中的矿带,矿带内金矿的形成、演化与分布严格受构造,尤其是断裂构造的控制。通过对桐峪金矿床、东闯金矿床、文峪金矿床、杨砦峪金矿床等典型矿床的研究,建立了小秦岭地区构造演化体系,系统划分了南矿带中生代断裂构造演化期次,并对金成矿期构造应力场进行了详细分析。以构造演化及应力场分布为基础,分别从矿床尺度和矿体尺度对构造控矿规律进行了总结。结合对构造控矿规律的分析,认为金成矿期的断裂在无大规模成矿活动或无二次叠加成矿作用的情况下,以第二矿化富集中心为目标进行深部找矿获得重大突破的难度较大,但主断裂下盘仍然存在有利的找矿空间。 展开更多
关键词 构造控矿 小秦岭 南矿带 应力分析
下载PDF
白音诺尔铅锌矿南矿带矿石选矿研究与生产实践 被引量:2
3
作者 陈玉清 陆树义 王忠学 《有色矿山》 1998年第6期24-26,15,共4页
本文分析了选厂存在的问题,并在试验研究和生产实践的基础上,提出了解决办法,使生产指标得到了提高。
关键词 南矿带矿石 磨矿细度 药剂组合 铅锌矿 选矿 PH值
下载PDF
Order of sphalerite and galena precipitation: A case study from lead-zinc deposits in southwest China 被引量:2
4
作者 ZHANG Yan HAN Run-sheng WEI Ping-tang 《Journal of Central South University》 SCIE EI CAS CSCD 2020年第1期288-310,共23页
Most of the lead and zinc deposits in Southwest China, are characterized by mineral zoning, which is especially true for the Huize and Zhaotong deposits. The mineral assemblage zoning is consistent for both horizontal... Most of the lead and zinc deposits in Southwest China, are characterized by mineral zoning, which is especially true for the Huize and Zhaotong deposits. The mineral assemblage zoning is consistent for both horizontal and vertical zoning, from the base(center) of the ore body to the top(outermost), the mineral zones are as follows. I-1: coarse-grained pyrite and a little puce sphalerite;I-2: brown sphalerite, galena, and ferro-dolomite;I-3: galena, sandy beige and pale yellow sphalerite, and calcite;and I-4: fine-grained pyrite, dolomite, and calcite. Among them, sphalerite is the landmark mineral of different zoning. From I-1 to I-3, the color of sphalerite changes from dark to light, its crystalline size changes from coarse to fine, and its structure changes from disseminated to veinlet. This mineral zoning is seen not only on a microscopic scale, but is also clear on a mesoscopic and macroscopic scale. It is caused by the order of the sphalerite and galena precipitation. We studied the metallic minerals and fluid inclusions using a thermodynamic phase diagram method, such as lgfO2–lgfS2, pH–lgfO2, pH–lg[Pb^2+] and pH–lg[HS^-], discussed the constraints on the order of the sphalerite and galena precipitation in the migration and precipitation process of lead and zinc under different pH values, oxygen fugacity, sulfur fugacity, and ionic activity. We also explain the formation mechanism and propose that the main controlling factor of the order of the sphalerite and galena precipitation is sulfur fugacity. 展开更多
关键词 precipitation order thermodynamic phase diagram mineral zoning lead and zinc deposit southwest of China
下载PDF
Estimation of main rheological parameters for Pangxidong-Jinkeng structural fracture zone and Qinzhou-Hangzhou metallogenetic belt in South China
5
作者 HE Junguo 《Global Geology》 2013年第3期121-129,共9页
The mylonites occurred in the fracture zones are studied by dynamically recrystallized quartz grains.The natural microstructures in mylonites are simulated and the deformation conditions of mylonitization are estimate... The mylonites occurred in the fracture zones are studied by dynamically recrystallized quartz grains.The natural microstructures in mylonites are simulated and the deformation conditions of mylonitization are estimated by fractal analysis,recrystallized grain size paleopiezometer and flow laws of quartzite.Depending on fractal analysis,the deformation temperature of mylonitization is approximately 600℃,which presents high greenschist facies to low amphibolite facies.The mylonitization occurred at differential stresses of 9.1--10.7MPa(lower limits).Compared with extrapolation of quartzite flow laws and estimates of fractal analysis,the strain rate of mylonitization is under 10-13.8/s. 展开更多
关键词 recrystallized quartz grains MYLONITE fractal analysis deformation condition Pangxidong-Jinkeng structural fracture zone
下载PDF
Multiple-aged granitoids and related tungsten-tin mineralization in the Nanling Range, South China 被引量:51
6
作者 CHEN Jun WANG RuCheng +2 位作者 ZHU JinChu LU JianJun MA DongSheng 《Science China Earth Sciences》 SCIE EI CAS 2013年第12期2045-2055,共11页
The Nanling metallogenic belt in South China is characterized by well-developed tungsten-tin mineralization related to multi- ple-aged granitoids. This belt is one of the 5 key prospecting and exploration areas among ... The Nanling metallogenic belt in South China is characterized by well-developed tungsten-tin mineralization related to multi- ple-aged granitoids. This belt is one of the 5 key prospecting and exploration areas among the 19 important metallogenic tar- gets in China. Important progress has been made in recent years in understanding the Nanling granitoids and associated miner- alization, and this paper introduces the latest major findings as follows: (1) there exists a series of Caledonian, Indosinian, and Yanshanian W-Sn-bearing granites; (2) the Sn-bearing Yanshanian granites in the Nanling Range form an NE-SW trending aluminous A-type granite belt that stretches over 350 km. The granites typically belong to the magnetite series, and dioritic micro-granular enclaves with mingling features are very common; (3) the Early Yanshanian Sn- and W-bearing granites pos- sess different petrological and geochemical features to each other: most Sn-bearing granites are metaluminous to weakly per- aluminous biotite (hornblende) granites, with zircon tHe(t) values of ca. -2 to -8, whereas most W-bearing granites are peralu- minous two-mica granites or muscovite granites with CHf(t) values of ca. -8 to -12; (4) based on the petrology and geochemis- try of the W-Sn-bearing granites, mineralogical studies have shown that common minerals such as titanite, magnetite, and bio- tite may be used as indicators for discriminating the mineralizing potential of the Sn-bearing granites. Similarly, W-bearing minerals such as wolframite may indicate the mineralizing potential of the W-bearing granites. Future studies should be fo- cused on examining the internal relationships between the multiple-aged granites in composite bodies, the metallogenic pecu- liarities of multiple-aged W-Sn-bearing granites, the links between melt evolution and highly evolved ore-bearing felsic dykes, and the connections between granite domes and mineralization. 展开更多
关键词 Nanling Range tungsten-bearing granites tin-bearing granites mineralizing potential ore-forming peculiarities
原文传递
Geological characteristics and mineralization setting of the Zhuxi tungsten(copper) polymetallic deposit in the Eastern Jiangnan Orogen 被引量:25
7
作者 CHEN GuoHua SHU LiangShu +2 位作者 SHU LiMin ZHANG Cheng OUYANG YongPeng 《Science China Earth Sciences》 SCIE EI CAS CSCD 2016年第4期803-823,共21页
The Zhuxi ore deposit is a super-large scheelite(copper) polymetallic deposit discovered in recent years. It grew above copper/tungsten-rich Neoproterozoic argilloarenaceous basement rocks and was formed in the contac... The Zhuxi ore deposit is a super-large scheelite(copper) polymetallic deposit discovered in recent years. It grew above copper/tungsten-rich Neoproterozoic argilloarenaceous basement rocks and was formed in the contact zone between Yanshanian granites and Carboniferous-Permian limestone. Granites related to this mineralization mainly include equigranular, middle- to coarse-grained granites and granitic porphyries. There are two mineralization types: skarn scheelite(copper) and granite scheelite mineralization. The former is large scale and has a high content of scheelite, whereas the latter is small scale and has a low content of scheelite. In the Taqian-Fuchun Basin, its NW boundary is a thrust fault, and the SE boundary is an angular unconformity with Proterozoic basement. In Carboniferous-Permian rock assemblages, the tungsten and copper contents in the limestone are both very high. The contents of major elements in granitoids do not differ largely between the periphery and the inside of the Zhuxi ore deposit. In both areas, the values of the aluminum saturation index are A/CNK>1.1, and the rocks are classified as potassium-rich strongly peraluminous granites. In terms of trace elements, compared to granites on the periphery of the Zhuxi ore deposit, the granites inside the Zhuxi ore deposit have smaller d Eu values, exhibit a significantly more negative Eu anomaly, are richer in Rb, U, Ta, Pb and Hf, and are more depleted in Ba, Ce, Sr, La and Ti, which indicates that they are highly differentiated S-type granites with a high degree of evolution. Under the influence of fluids, mineralization of sulfides is evident within massive rock formations inside the Zhuxi ore deposit, and the mean SO_3 content is 0.2%. Compared to peripheral rocks, the d Eu and total rare earth element(REE) content of granites inside the Zhuxi ore deposit are both lower, indicating a certain evolutionary inheritance relationship between the granites on the periphery and the granites inside the Zhuxi ore deposit. For peripheral and ore district plutons, U-Pb zircon dating shows an age range of 152–148 Ma. In situ Lu-Hf isotope analysis of zircon in the granites reveals that the calculated e_(Hf)(t) values are all negative, and the majority range from -6 to -9. The T_(DM2) values are concentrated in the range of 1.50–1.88 Ga(peak at 1.75 Ga), suggesting that the granitic magmas are derived from partial melting of ancient crust. This paper also discusses the metallogenic conditions and ore-controlling conditions of the ore district from the perspectives of mineral contents, hydrothermal alteration, and ore-controlling structures in the strata and the ore-bearing rocks. It is proposed that the Zhuxi ore deposit went through a multistage evolution, including oblique intrusion of granitic magmas, skarn mineralization, cooling and alteration, and precipitation of metal sulfides. The mineralization pattern can be summarized as "copper in the east and tungsten in the west, copper at shallow-middle depths and tungsten at deep depths, tungsten in the early stage and copper in the late stage". 展开更多
关键词 Tungsten(copper) polymetallic deposit Late Mesozoic granites Carboniferous-Permian carbonate rocks Skarn mineralization Zhuxi ore deposit Eastern Jiangnan Orogen
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部