【摘要】：黃金是人類最早發(fā)現(xiàn)和使用的自然元素之一,它在各國的國民經(jīng)濟中占有較重要的地位。因此,世界各國都十分重視對金礦的找尋,加強金礦基礎地質(zhì)的研究也是我國礦床研究的重要課題之一。新疆礦藏資源十分豐富,有“金玉之邦”的美稱。在新疆區(qū)內(nèi)劃分的近40個金礦成礦帶中,阿達西金礦所處的西昆侖地區(qū)屬于新疆金礦研究中相對較薄弱的地區(qū)之一,具有較高的研究價值。本論文在收集和分析前人資料的基礎上,通過野外實踐地質(zhì)調(diào)查,結(jié)合室內(nèi)鏡下觀察及實驗分析測試,總結(jié)概述了阿達西金礦床區(qū)域地質(zhì)背景、礦床地質(zhì)特征,詳細研究了阿達西金礦床礦石礦物學特征,簡要分析了阿達西金礦床成礦規(guī)律及找礦標志、找礦方向,在綜合研究分析的基礎上,得出以下結(jié)論:(1)阿達西金礦床礦體賦存于賽圖拉巖群(ChSt.a)片麻巖和提熱艾力組淺變質(zhì)碎屑巖(C2t)中,而且明顯受斷裂構(gòu)造及巖漿巖的綜合控制。初步確定阿達西金礦床類型以構(gòu)造蝕變巖型為主,石英脈型次之。(2)阿達西金礦床金屬礦物主要有黃鐵礦、方鉛礦、閃鋅礦、黃銅礦、磁鐵礦,次之為毒砂、鈦鐵礦、銅藍、孔雀石、金紅石等,氧化帶可見褐鐵礦。脈石礦物主要為石英、絹云母、綠泥石,次之為斜長石、鉀長石、白云母等。(3)阿達西金礦床礦石構(gòu)造主要有脈狀構(gòu)造、浸染狀構(gòu)造、細脈浸染狀構(gòu)造、團塊狀構(gòu)造、碎裂構(gòu)造等;礦石結(jié)構(gòu)主要有它形晶結(jié)構(gòu)、自形—半自形晶結(jié)構(gòu)、交代結(jié)構(gòu)、壓碎結(jié)構(gòu)等。(4)剪切構(gòu)造成礦是阿達西金礦床的主要成礦過程,剪切構(gòu)造帶是本區(qū)尋找構(gòu)造蝕變巖帶重要的直接標志。礦區(qū)內(nèi)區(qū)域性斷裂與其所引起次級斷裂、斷層的交匯部或所引起的次級裂隙、層間破碎帶、中酸性大巖體與變質(zhì)巖圍巖的外接觸帶及已查明礦(化)體的深部均可作為下一步找礦的方向,尤其是在找礦標志藕合較好的地段。
[Abstract]:Gold is one of the earliest natural elements discovered and used by human beings, and it plays an important role in the national economy of various countries. Therefore, countries all over the world attach great importance to the exploration of gold deposits, and strengthening the study of the basic geology of gold deposits is one of the important topics of ore deposit research in China. Xinjiang is rich in mineral resources and has the reputation of "the state of gold and jade". Among the nearly 40 gold metallogenic belts in Xinjiang, the West Kunlun area, where the adasi gold deposit is located, is one of the relatively weak areas in the study of gold deposits in Xinjiang, which is of high research value. Based on the collection and analysis of previous data, the paper summarizes the regional geological background and geological characteristics of the Adaxi gold deposit through field practical geological investigation, combined with laboratory observation and experimental analysis and testing. The ore mineralogical characteristics of the Adaxi gold deposit are studied in detail, and the metallogenic regularity, prospecting criteria and prospecting direction of the Adaxi gold deposit are briefly analyzed. The conclusions are as follows: (1) the ore bodies of the Adaxi gold deposit occur in the gneiss of the Seitura Group (ChSt.a) and the shallow metamorphic clastic rocks (C2t) of the Tieraoli formation, and are obviously controlled by the fault structure and magmatic rocks. It is preliminarily determined that the main type of gold deposit in Adaxi is structural alteration rock type, followed by quartz vein type. (2) the main metal minerals of the Adaxi gold deposit are pyrite, galena, sphalerite, chalcopyrite, magnetite, followed by arsenopyrite and ilmenite. Copper blue, malachite, rutile and so on, oxidation zone can be seen limonite. Gangue minerals are mainly quartz, sericite, chlorite, followed by plagioclase, potassium feldspar, Muscovite, etc. Cataclastic structures, etc.; Ore structures are mainly heteromorphic, automorphic, metasomatic, crushed, etc. (4) Shear structure is the main metallogenic process of the Adaxi gold deposit. Shear structural zone is an important direct sign for finding structural altered rock belt in this area. Regional faults in the mining area and secondary faults caused by them, the intersection of faults or secondary fractures caused by them, interlaminar fracture zones, The outer contact zone between intermediate-acid rock mass and metamorphic rock mass and the depth of the known ore-body can be regarded as the next prospecting direction, especially in the areas where the prospecting markers are well coupled.
【學位授予單位】：成都理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P618.51

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本文編號：2333394