本文關(guān)鍵詞： 金鋅礦床 地質(zhì)特征 礦床成因 成礦預(yù)測 爭光　出處：《吉林大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：多寶山成礦帶是我國北方重要的斑巖型Cu-Au-Mo成礦帶,其大地構(gòu)造位于古亞洲成礦構(gòu)造域和濱太平洋成礦構(gòu)造域的疊加部位,是大興安嶺弧盆系與小興安嶺弧盆系的交接部位,成礦地質(zhì)條件優(yōu)越,礦產(chǎn)資源豐富。爭光金鋅礦位于多寶山成礦帶南東段,北西向上距離銅山銅礦約5km,距離多寶山斑巖型銅鉬礦約10km。其成礦時代與多寶山銅-金礦的關(guān)系及深部找礦方向尚不明晰。本文選擇該區(qū)近年來找礦工作取得較大突破,但理論研究相對薄弱的爭光金鋅礦床為研究對象,通過總結(jié)金鋅礦床特征,研究成礦流體特征、地球物理和化學(xué)特征,成巖時代和構(gòu)造背景等特征,進(jìn)一步厘定金鋅礦成礦類型,探討該區(qū)未來找礦方向和成礦預(yù)測。爭光金鋅礦區(qū)多種花崗閃長斑巖和長石斑巖等穿插礦體脈巖鋯石U-Pb年代學(xué)工作表明,金成礦作用應(yīng)早于454Ma。結(jié)合多寶山年代學(xué)工作成果,爭光金鋅礦床是受古亞洲洋俯沖的島弧環(huán)境控制,與多寶山含金銅、鉬礦床和銅山銅礦床近于同期或略晚的金成礦系統(tǒng)。研究區(qū)地球物理特征和礦床特征表明,爭光金鋅礦床主要為低磁-中極化特征,礦體因熱液蝕變,則進(jìn)一步表現(xiàn)為弱磁特征。從礦化特征、脈系組合特征、蝕變分帶特征上,爭光應(yīng)屬于淺成低溫?zé)嵋盒偷V床,而不同于構(gòu)造蝕變巖型金礦;從特征礦物組合、硫化物含量、閃鋅礦Fe含量、特征礦物結(jié)構(gòu)構(gòu)造劃分,爭光金鋅礦床則屬于中硫型金礦床,為高硫型向低硫型過渡類型,并伴生鋅礦化。研究區(qū)主要以古生代北西向構(gòu)造和北東向次級構(gòu)造活動組成區(qū)內(nèi)基本構(gòu)造格局,后期發(fā)生繼承性構(gòu)造活動形成區(qū)內(nèi)北西向、北東向、南北向等構(gòu)造格局。結(jié)合多寶山-爭光航磁異常特征和出現(xiàn)多組火山角礫巖、大量發(fā)育火山碎屑巖等特征,推測區(qū)內(nèi)可能存在火山-次火山構(gòu)造活動,為金鋅礦體運移和儲存提供通道和空間。通過對區(qū)內(nèi)成礦地質(zhì)特征的進(jìn)一步研究,總結(jié)礦床成礦規(guī)律,結(jié)合地球物理和地球化學(xué)異常特征,對爭光金鋅礦區(qū)東部、II號帶深部和I、IV號礦帶與II號帶之間構(gòu)造活動區(qū)域進(jìn)行成礦預(yù)測。預(yù)測研究區(qū)內(nèi)深部具有尋找金、銅礦床潛力,淺部金礦具備突破50t潛力。
[Abstract]:The Duobaoshan porphyry metallogenic belt is an important metallogenic belt of North China Cu-Au-Mo, parts of the tectonic superposition in paleo Asian metallogenic tectonic domain and the Pacific tectonic domain, is the junction of the Greater Khingan Range arc basin system and small Xingan mountain arc basin system, favorable metallogenic conditions and abundant mineral resources. The glory of gold zinc ore located in the South East Baoshan metallogenic belt, North West from the Copper Mt. copper mine is about 5km and the distance of the Duobaoshan porphyry copper molybdenum deposit metallogenic epoch and the relationship about 10km. Duobaoshan copper - gold and deep ore prospecting direction is still not clear. In this paper the district made great breakthroughs in recent years prospecting work, but theory study on the relatively weak credit gold zinc deposit as the research object, through summing up the gold zinc deposit characteristics, study the characteristics of ore-forming fluids, geophysical and geochemical characteristics, diagenetic age and tectonic background characteristics, further mineralization gold zinc ore The type, discuss the future prospecting direction and metallogenic prediction of this area. The glory of gold zinkgruvan variety of granodiorite porphyry and porphyry ore veins feldspar with zircon U-Pb geochronology shows that gold mineralization should be earlier than the 454Ma. with the Baoshan chronology work, glory gold zinc deposit is controlled by the subduction of the paleo Asian Ocean island arc environment Duobaoshan copper, and gold, gold metallogenic system of molybdenum deposit and Copper Mt. copper deposit is the same or slightly later. Indicating that the study area of geophysical characteristics and ore deposit characteristics, the glory of gold zinc deposit is mainly low magnetic polarization characteristics, orebody due to hydrothermal alteration, further showed weak magnetic characteristics. From the characteristics of mineralization the combination of features, veins, alteration zoning characteristics, the glory belongs to the epithermal deposit, which is different from the tectonic altered rock type gold deposit; from the mineral assemblages, the sulfide content of sphalerite, Fe content, characteristics of mineral structure Tectonic division, gold deposit belongs to the glory of zinc sulfur type gold deposit for high sulfur to low sulfur type transition type, and the associated zinc mineralization. The study area mainly in the Paleozoic NW and NE trending secondary tectonic activities basic tectonic pattern in the region, the late occurrence of inherited tectonic activities forming region in the North West to the north, East, North and south to the tectonic pattern. With Baoshan glory aeromagnetic anomalies and multiple volcano breccia, a large number of development characteristics of volcano clastic rocks, predicted the existence of volcano subvolcano tectonic activity in the region, to provide space and channel for the gold ore bodies through a further study on the migration and storage. The geological characteristics of mineralization zone, metallogenic regularity of ore deposit, combining geophysical and geochemical anomalies, the glory gold mine in eastern II, zinc, with deep and I, IV and II between ore belt metallogenic tectonic activity region. The prediction research area has the potential to find gold and copper deposits in the deep part of the study area, and the shallow gold deposits have the potential to break through 50t.

【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】：2015
【分類號】：P618.51;P618.43

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 劉軍;周振華;何哲峰;歐陽荷根;;黑龍江省銅山銅礦床英云閃長巖鋯石U-Pb年齡及地球化學(xué)特征[J];礦床地質(zhì);2015年02期

2 吳昊;武廣;陶宏;王國瑞;李鐵剛;陳軍其;楊寧寧;;內(nèi)蒙古卓資縣大蘇計斑巖型鉬礦床輝鉬礦Re_Os同位素年齡及流體包裹體研究[J];礦床地質(zhì);2014年06期

3 高榮臻;呂新彪;楊永勝;李春誠;;黑龍江爭光金礦床隱爆角礫巖特征及其地質(zhì)意義[J];地質(zhì)與勘探;2014年05期

4 李宗瑾;史老虎;金文強(qiáng);;廟溝鉛鋅礦成礦地質(zhì)特征及礦床成因分析[J];現(xiàn)代礦業(yè);2014年07期

5 陳沖;魏俊浩;付樂兵;田寧;張道涵;熊樂;;河南泌陽條山富鐵礦床交代成礦作用淺析[J];西北地質(zhì);2014年01期

6 劉瑞;;海南儋州走兵嶺多金屬礦地球化學(xué)特征及成礦預(yù)測[J];價值工程;2013年35期

7 陳新衛(wèi);李燈平;溫珍海;沈浩;王定生;;江西龍南寶蓮山鎢銅礦地質(zhì)特征及找礦前景分析[J];中國鎢業(yè);2013年04期

8 盧煥章;朱笑青;單強(qiáng);王中剛;;金礦床中金與黃鐵礦和毒砂的關(guān)系[J];礦床地質(zhì);2013年04期

9 白文軍;韓和平;楊鵬;賈勇;;鎮(zhèn)坪縣楊江河礦區(qū)釩礦地質(zhì)特征及找礦遠(yuǎn)景[J];陜西地質(zhì);2013年01期

10 鄧軻;李諾;楊永飛;張成;于援幫;張東財;;黑龍江省黑河市爭光金礦流體包裹體研究及礦床成因[J];巖石學(xué)報;2013年01期

相關(guān)博士學(xué)位論文 前2條

1 張t，

本文編號：1470647