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脉状金矿床定位成矿预测基本原理 总被引:4,自引:0,他引:4
脉状钛档定位成矿预测是当前乃至更长远时期内黄金生产矿山急需解决的应用性研究课题。其基本原理在于客观地、定量地进行矿床成矿机理的研究,根据给出的成矿流体进入成矿系统后,由体系自身性质变化的实测数据据此可建立成矿趋势场,进而采用趋势分析的方法进行定位成矿预测。 相似文献
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黄淮地区是我国东部煤炭集中地之一,尤其在进行浅部煤层开采时极易发生突水事故。为了快速准确地识别突水水源,文章收集安徽省淮南矿区、淮北矿区和阜阳市谢桥矿区等5个矿区的100个水样数据,先通过Piper三线图分析黄淮地区各主要突水含水层的水化学特征,然后选取七大离子、pH和TDS为判别指标,通过熵权法与灰色关联度理论相结合的方法,建立了灰色加权关联度水源判别模型,最后利用该模型对11个待判样本进行预判,错判了一个。结果表明,熵权-灰色关联度矿井突水水源判别模型能够有效的提高识别精度,迅速准确地判断突水水源,为以后黄淮地区的煤矿安全工作提供了依据。 相似文献
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脉状金矿床定位成矿预测是当前乃至更长远时期内黄金生产矿山急需解决的应用性研究课题。其基本原理在于客观地、定量地进行矿床成矿机理的研究,根据所给出的成矿流体进入成矿系统后,由体系自身性质变化的实测数据即△(T-P-Xi)所引起的矿化强度变化呈对应关系,据此可建立成矿趋势场,进而采用趋势分析的方法进行定位成矿预测。 相似文献
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断裂面波形模拟预测法在脉状金矿床深部定位预测中的应用 总被引:3,自引:0,他引:3
本文根据断裂构造控矿原理和大中型脉状金矿床的特点,引入断裂面波的形函数概念,借助计算机技术,研究断裂面形控矿规律。在此基础上,根据波的叠加和分解原理,模拟断裂面波形函数,进行断裂面波形预测和成矿预测,从而为大中型脉状金矿床深部矿体一位预测提供了一种可行的方法。 相似文献
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DONG Yongguan ZHANG ChuanlinNanjing Institute of Geology Mineral Resources East Zhongshan Rd. Nanjing Jiangsu 《《地质学报》英文版》2000,74(3):582-586
The Aktubaik gold deposit lies in the Altay middle-high mountains area, Xinjiang, hosted by the Pa-laeo- and Mesoproterozoic Xemirxek Group. It is the first gold deposit found in Precambrian rocks in Altay. The deposit is controlled by the NW-trending fracture-alteration zone, in which rocks have been strongly altered and bleached. The main wall-rock alterations include silicification, sericitization (muscovitization), carbonation, pyritiza-tion and tourmalinization. Several gold mineralization zones of this type have been found in the study area. The dominant gold mineral is native gold, which is distributed very unevenly, so special methods such as peeling and bulk sampling are required in exploration. The discovery of this gold deposit has laid a foundation for gold exploration in Precambrian rocks in the Altay middle-high mountains area, Xinjiang. 相似文献
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金矿采样方法十分重要。根据金品位在含金石英脉厚度方向上呈跳跃式的“W”型的变化规律来指,导金矿采样,能有效地提高采样质量,提高找矿效果。 相似文献
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新疆阿尔泰南缘巴利尔斯铁矿床稀土元素地球化学研究 总被引:1,自引:0,他引:1
巴利尔斯铁矿是阿尔泰南缘麦兹盆地新近发现的中型铁矿床.赋存于上志留—下泥盆统康布铁堡下亚组第二岩性段变粒岩、浅粒岩及斜长角闪岩中,矿体及其周围发育大量矽卡岩矿物.本文对矿体围岩、矽卡岩矿物和矿石进行了稀土元素地球化学研究,结果表明磁铁矿矿石、矽卡岩与围岩斜长角闪岩的 REE 特征具有相似性,暗示磁铁矿矿石与矽卡岩具有亲缘性,斜长角闪岩可能提供部分成矿物质.矽卡岩和矿石发育Eu正异常及所有矿石的负Ce异常,表明铁成矿作用发生在高温氧化环境. 相似文献
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DING Rufu WANG Jingbin ZHAO Lunshan MA Zhongmei ZHANG Jinhong Beijing Institute of Geology for Mineral Resources Beijing Institute of Geology Geophysics Chinese Academy of Sciences Beijing China University of Geosciences Beijing No. Team of Xinjiang Geological Exploration Bureau for Nonferrous Metals Altay Xinjiang 《《地质学报》英文版》2004,78(2):392-395
The dating of fluid inclusions of quartz yields an Ar-Ar isochrone age of 320.4±6 Ma. Three types of fluid inclusions have been identified with the homogenization temperature ranging from 157℃ to 362℃. The homogenization temperature consists of two groups. The first group varies from 157℃ to 166℃, and the second from 232℃ to 362℃. Their chemical composition is dominated by Na+-Ca2+-Mg2+ and Cl-. The relative concentration of ions is characteristic by Na+>Ca2+>K+>Mg2+ and C1->SO42-> F-. The δD and δ18O values indicate that the ore-forming fluid originates from mixing of multi-source water. The Sarkobu gold deposit has experienced two mineralization stages: gold was enriched during the volcanic-exhalative-sedimentary process in the early stage, while the gold deposit was finally formed under compression-shearing during the orogenic period. 相似文献
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唐家沟金矿位于胶东牟平乳山金矿带西南段;历经数次勘查工作,近期获得较大突破,累计金金属资源量规模达到近大型。矿区内出露地层主要为古元古代荆山群变质岩及新生界第四系,构造以古元古代褶皱构造和中生代断裂构造为主,其中含金矿化蚀变带受 NNE 向、NE 向、近 EW 向断裂控制。主要控矿构造呈 NNE 向、近 EW向展布,矿石类型主要为黄铁矿化石英脉、黄铁矿化花岗质碎裂岩和黄铁矿化大理岩,矿化具多期活动特点。研究发现,控矿构造局部引张段与其他构造交会处是储矿的有利部位,矿化蚀变叠加地段预示着深部成矿可能性极大。深部预测 NNE 向金矿化断裂构造与 NE 向硫化物富集带交会部位,残留荆山群地层与侵入岩接触部位、接触带与NE 向硫化物富集带交会部位为成矿的有利地带。 相似文献
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大丫口地区位于黔西南卡林型金矿矿集区内,大地构造位处扬子地台西南缘与华南加里东褶皱带西缘两大构造单元的过渡地带,北西向与泥堡大型金矿床相连,南东向与戈塘金矿床相邻。目前已发现区内金矿(化)主要有两种产出类型:一是赋存于茅口组上与覆龙潭组底部一套由区域性构造作用形成的、并经热液蚀变的构造蚀变岩体(SBT)中的层控型,二是产于断层破碎带或两盘牵引膝褶带内的断控型。本文初步总结了该区的找矿标志,开展了找矿预测。 相似文献
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Hu Wangliang Lu RuiyingDepartment of Mathematical Geology China University of Geosciences Beijing Gao Huaizhong Zhang WangshengInstitute of Geology Mineral Resources of Xinjiang China University of Geosciences Wuhan 《中国地质大学学报(英文版)》1995,(2)
The system of mineral deposit statistical prediction methods, based on the similarity-analogy theory, searching anomaly theory and the theory of ore-controlling by quantitative assemblage of metallotects, can he summarized into the following aspects: (1)concluding main ore-controlling conditions and ore-hunting indicators from typical deposits; (2)establishing geological concept model of deposits; (3)selecting geological variable and dividing study units and granting specific value for each variable; (4)by the use of geological and mathematical geology method, building predication model , delineating prospective area for exploration and estimating the total resources; (5)evaluating the prospecting work . It is good practice to use this system for metallogenic prognosis and regional prospecting of gold deposit in East Junggar, Xinjiang and has achieved great success . As a result, we discovered the Kubusu gold mineralized belt , delineated prospective area , estimated total resources of gold in the belt a 相似文献
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从江翁浪金矿是黔东南地区蚀变岩型金矿的典型代表.前人对翁浪金矿的研究仅限于宏观的构造及围岩蚀变等方面,同时对该金矿床容矿岩石及矿石物质组分作过初步研究探讨.在前人工作的基础上,采用矿相鉴定、化学分析、单矿物试金分析、电子探针及X射线衍射等多种物理化学分析手段,对翁浪金矿床中金矿物类型、形态、成色、嵌布特征以及金的赋存状态、载金矿物等做了细致的微观分析研究. 相似文献