發(fā)布時(shí)間：2018-07-24 15:04

【摘要】：荒甸子金礦區(qū)位于鳳城市西北,行政區(qū)劃隸屬于鳳城市青城子鎮(zhèn)白云山村管轄。該區(qū)大地構(gòu)造位置位于中朝準(zhǔn)地臺,膠遼臺隆,營口—寬甸臺拱,風(fēng)城凸起四級構(gòu)造單元中部的白云~大三道溝~四花頂子背斜構(gòu)造單元中部,區(qū)內(nèi)出露地層自下而上、由老而新依次為:古元古界遼河群浪子山組、里爾峪組、高家峪組、大石橋組和蓋縣組,古元古界青白口系釣魚臺組及第四系。區(qū)內(nèi)褶皺與斷裂構(gòu)造均較發(fā)育,褶皺以東西軸向?yàn)橹?而斷裂則北西向較為發(fā)育,北東向次之。區(qū)內(nèi)巖漿活動強(qiáng)烈,巖漿巖發(fā)育,并具有多期次、多侵位的特征,巖體、巖脈,基性、酸性均有。區(qū)內(nèi)主要金礦化類型有:硅鉀蝕變巖型、破碎帶型、綠泥石化片巖型、蝕變斑巖型等。礦體空間產(chǎn)出特征相似,均呈似層狀、透鏡狀或脈狀產(chǎn)出;礦脈產(chǎn)狀相近或彼此平行,有分枝復(fù)合或尖滅再現(xiàn)的特征。區(qū)內(nèi)礦石中金屬礦物主要為:黃鐵礦、磁黃鐵礦、其次為黃銅礦、方鉛礦、閃鋅礦、自然金、自然銀、銀金礦、赤鐵礦、深紅銀礦、磁鐵礦、斑銅礦、輝銅礦、毒砂等。非金屬礦物有:石英、正長石、方解石、高嶺土、白云母、綠泥石、石墨等。本文在硫、碳、氫、氧同位素、流體包裹體測溫及鋯石U-Pb定年分析等工作基礎(chǔ)上,認(rèn)為荒甸子金礦床主成礦期為印支—燕山期,礦床屬于沉積-變質(zhì)-巖漿熱液疊加改造型金(銀)礦床。區(qū)內(nèi)共探獲金礦體(工業(yè)礦+低品位礦)礦石量700余萬噸,金金屬量20余噸;探獲銀礦體(工業(yè)礦+低品位礦)礦石量170余萬噸,銀金屬量400余噸。根據(jù)成礦地質(zhì)條件有利程度和礦床成因,在礦區(qū)外圍通過物探、化探、槽探、地質(zhì)預(yù)查等方法進(jìn)行預(yù)測工作;圈定出找礦靶區(qū)1處,認(rèn)為該靶區(qū)具有尋找深部金及多金屬礦產(chǎn)資源的潛力。
[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.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：P618.51

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 趙昕;遼寧白云金礦床地質(zhì)地球化學(xué)特征及成礦遠(yuǎn)景分析[D];吉林大學(xué);2017年

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本文編號：2141757