辽宁省荒甸子金矿床地质特征及成矿预测
发布时间：2018-07-24 15:04
【摘要】：荒甸子金矿区位于凤城市西北,行政区划隶属于凤城市青城子镇白云山村管辖。该区大地构造位置位于中朝准地台,胶辽台隆,营口—宽甸台拱,风城凸起四级构造单元中部的白云~大三道沟~四花顶子背斜构造单元中部,区内出露地层自下而上、由老而新依次为:古元古界辽河群浪子山组、里尔峪组、高家峪组、大石桥组和盖县组,古元古界青白口系钓鱼台组及第四系。区内褶皱与断裂构造均较发育,褶皱以东西轴向为主,而断裂则北西向较为发育,北东向次之。区内岩浆活动强烈,岩浆岩发育,并具有多期次、多侵位的特征,岩体、岩脉,基性、酸性均有。区内主要金矿化类型有:硅钾蚀变岩型、破碎带型、绿泥石化片岩型、蚀变斑岩型等。矿体空间产出特征相似,均呈似层状、透镜状或脉状产出;矿脉产状相近或彼此平行,有分枝复合或尖灭再现的特征。区内矿石中金属矿物主要为:黄铁矿、磁黄铁矿、其次为黄铜矿、方铅矿、闪锌矿、自然金、自然银、银金矿、赤铁矿、深红银矿、磁铁矿、斑铜矿、辉铜矿、毒砂等。非金属矿物有:石英、正长石、方解石、高岭土、白云母、绿泥石、石墨等。本文在硫、碳、氢、氧同位素、流体包裹体测温及锆石U-Pb定年分析等工作基础上,认为荒甸子金矿床主成矿期为印支—燕山期,矿床属于沉积-变质-岩浆热液叠加改造型金(银)矿床。区内共探获金矿体(工业矿+低品位矿)矿石量700余万吨,金金属量20余吨;探获银矿体(工业矿+低品位矿)矿石量170余万吨,银金属量400余吨。根据成矿地质条件有利程度和矿床成因,在矿区外围通过物探、化探、槽探、地质预查等方法进行预测工作;圈定出找矿靶区1处,认为该靶区具有寻找深部金及多金属矿产资源的潜力。
[Abstract]:Huadianzi Gold Mine area is located in the northwest of Fengcheng City, and the administrative division is under the jurisdiction of Baiyun Mountain Village, Qingchengzi Town, Fengcheng City. The geotectonic position in this area is located in the middle of the Central Baiyun ~ Da San Dao Gou ~ Sihuadingzi anticline, which is located in the quasi-platform of China, Jiaoliaotai uplift, Yingkou-Kuandian platform arch, and central Baiyun ~ Da Sandaogou ~ Sihuadingzi anticline in the middle of Fengcheng uplift. The order of old and new is: Longzishan formation of Liaohe group, Lianyu formation, Gaojiayu formation, Dashiqiao formation and Gaoxian formation of Paleoproterozoic, Diaoyutai formation and Quaternary formation of Qingbakou system in Paleoproterozoic. The fold and fault structures are relatively developed in this area, the fold is mainly east-west axis, while the fault is relatively developed in the NW direction, followed by the NE direction. The magmatic activity is strong, magmatic rock is developed, and it has the characteristics of multiple periods and multiple emplacement, such as rock mass, vein, basic and acidic. The main types of gold mineralization in the area are silicon-potassium altered rock type, broken zone type, greenstone schist type, altered porphyry type and so on. The ore bodies have similar spatial characteristics, which are laminar, lenticular or vein-like, and the veins are similar or parallel to each other, and have the characteristics of branching and reappearing. The main metal minerals in the ore are pyrite, pyrrhotite, chalcopyrite, galena, sphalerite, natural gold, natural silver, silver gold, hematite, crimson silver, magnetite, porphyrite, chalcopyrite, arsenopyrite, etc. Non-metallic minerals: quartz, orthoclase, calcite, kaolin, Muscovite, chlorite, graphite and so on. Based on the work of sulfur, carbon, hydrogen, oxygen isotope, fluid inclusion temperature measurement and zircon U-Pb dating, it is considered that the main metallogenic period of the Huadianzi gold deposit is the Indosinian to Yanshanian epoch. The deposit belongs to sedimentary-metamorphic-magmatic hydrothermal superposition type gold (silver) deposit. A total of 7 million tons of ore and more than 20 tons of gold metals were found in the gold ore body (industrial low grade ore), over 1.7 million tons of silver ore (industrial low grade ore) and 400 tons of silver metal. According to the favorable degree of ore-forming geological conditions and the genesis of ore deposits, the prediction work is carried out by means of geophysical prospecting, geochemical exploration, trough exploration and geological pre-inspection in the periphery of the mining area, and a prospecting target area is delineated. It is considered that the target area has the potential of searching for deep gold and polymetallic mineral resources.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：P618.51
本文编号：2141757
[Abstract]:Huadianzi Gold Mine area is located in the northwest of Fengcheng City, and the administrative division is under the jurisdiction of Baiyun Mountain Village, Qingchengzi Town, Fengcheng City. The geotectonic position in this area is located in the middle of the Central Baiyun ~ Da San Dao Gou ~ Sihuadingzi anticline, which is located in the quasi-platform of China, Jiaoliaotai uplift, Yingkou-Kuandian platform arch, and central Baiyun ~ Da Sandaogou ~ Sihuadingzi anticline in the middle of Fengcheng uplift. The order of old and new is: Longzishan formation of Liaohe group, Lianyu formation, Gaojiayu formation, Dashiqiao formation and Gaoxian formation of Paleoproterozoic, Diaoyutai formation and Quaternary formation of Qingbakou system in Paleoproterozoic. The fold and fault structures are relatively developed in this area, the fold is mainly east-west axis, while the fault is relatively developed in the NW direction, followed by the NE direction. The magmatic activity is strong, magmatic rock is developed, and it has the characteristics of multiple periods and multiple emplacement, such as rock mass, vein, basic and acidic. The main types of gold mineralization in the area are silicon-potassium altered rock type, broken zone type, greenstone schist type, altered porphyry type and so on. The ore bodies have similar spatial characteristics, which are laminar, lenticular or vein-like, and the veins are similar or parallel to each other, and have the characteristics of branching and reappearing. The main metal minerals in the ore are pyrite, pyrrhotite, chalcopyrite, galena, sphalerite, natural gold, natural silver, silver gold, hematite, crimson silver, magnetite, porphyrite, chalcopyrite, arsenopyrite, etc. Non-metallic minerals: quartz, orthoclase, calcite, kaolin, Muscovite, chlorite, graphite and so on. Based on the work of sulfur, carbon, hydrogen, oxygen isotope, fluid inclusion temperature measurement and zircon U-Pb dating, it is considered that the main metallogenic period of the Huadianzi gold deposit is the Indosinian to Yanshanian epoch. The deposit belongs to sedimentary-metamorphic-magmatic hydrothermal superposition type gold (silver) deposit. A total of 7 million tons of ore and more than 20 tons of gold metals were found in the gold ore body (industrial low grade ore), over 1.7 million tons of silver ore (industrial low grade ore) and 400 tons of silver metal. According to the favorable degree of ore-forming geological conditions and the genesis of ore deposits, the prediction work is carried out by means of geophysical prospecting, geochemical exploration, trough exploration and geological pre-inspection in the periphery of the mining area, and a prospecting target area is delineated. It is considered that the target area has the potential of searching for deep gold and polymetallic mineral resources.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：P618.51
【引证文献】
相关硕士学位论文 前1条
1 赵昕;辽宁白云金矿床地质地球化学特征及成矿远景分析[D];吉林大学;2017年
，本文编号：2141757
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