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黄金科学技术 ›› 2012, Vol. 20 ›› Issue (5): 1-15.

• 矿产勘查 •    下一篇

内蒙古毕力赫与侵入体有关的大型金矿床地质特征及成因研究

葛良胜1,2,3,张文钊1,卿敏1,郝百武1,2,3   

  1. 1.武警黄金地质研究所,河北  廊坊   065000;
    2.中国地质科学院地质研究所,北京   100037;
    3.中国地质大学地质过程与矿产资源国家重点实验室,北京   100083
  • 收稿日期:2012-06-28 修回日期:2012-08-26 出版日期:2012-10-29 发布日期:2013-04-03
  • 作者简介:葛良胜(1966-),男,安徽潜山人,高级工程师,从事金矿床地质研究与勘查工作.geliangsheng@yahoo.com.cn
  • 基金资助:

    全国危机矿山接替资源勘查“典型矿床成矿规律综合研究”项目(编号:20089925)资助.

Geological Characteristics and Genesis of Intrusion-related Bilihe Large Gold Deposit,Inner Mongolia

GE Liangsheng1,2,3,ZHANG Wenzhao1,QING Min1,HAO Baiwu1,2,3   

  1. 1.Gold Geological Institute of CAPF,Langfang   065000,Hebei,China;
    2.Institute of Geology,Chinese Academy of Geological Sciences,Beijing    100037,China;
    3.State Key Laboratary of Geological Process and Mineral Resouce,China University of Geoscience,Beijing   100083,China
  • Received:2012-06-28 Revised:2012-08-26 Online:2012-10-29 Published:2013-04-03

摘要:

内蒙古毕力赫金矿位于华北板块北缘古生代增生带内,是我国北方重要的锡、钼成矿区。与成矿有关的侵入体呈隐伏状态侵入于火山岩系中,岩性为花岗闪长(斑)岩(272~269 Ma),是主要成矿岩体,形成于华北板块北缘晚古生代活动大陆边缘的增生—碰撞过渡环境。矿床主矿体以隐伏状态产于花岗闪长(斑)岩体及其接触带,从岩体中心向外金品位逐渐变贫。矿石类型主要为矿化的花岗闪长斑岩,岩石内发育大量席状含金石英脉、网状脉及接触带部位的单向固结结构(UST),与金品位呈正相关。围岩蚀变以岩体内的钾化和硅化为主,其次为高岭土化,以及外围大面积的伊利石化、青磐岩化等。矿石石英中流体为含CO2的水溶液,原生包裹体均一温度划分为2个峰值区(430~550 ℃和<380 ℃),研究表明,成矿流体早期主要来源于岩浆,随着成矿空间的抬升和成矿过程的延续,有不同程度的大气降水加入。成矿年代学研究表明,花岗闪长斑岩体内辉钼矿Re-Os等时线年龄为(272.7±1.6) Ma,成矿作用开始于花岗闪长岩岩浆结晶晚期。对比表明,毕力赫金矿床与跨越欧亚大陆的全球性与侵入体有关的金矿床成矿带的许多矿床特征相似,是我国同类型金矿床的典型代表。

关键词: 大型金矿床, 侵入体, 地质特征, 矿床成因, 毕力赫, 内蒙古

Abstract:

Bilihe gold deposit in Inner Mongolia is located in the northern margin of the North China Craton Paleozoic accretionary zone,which is important area of Sn-Mo mineralazation area in the northern China.Intrusion related to mineralization intruded into the volcanic rocks, is the main ore-forming rock formed in the northern margin of the late Paleozoic active continental North China Craton’s edge of accretionary-collisions transition setting,composed of granodiorite (porphyry) rock(272 to 269 Ma).The main ore bodies as consealed state lie in the granodiorite rock body and the contact zone between the granodiorite and wall rock.Ore grade from the terrane’scenter to its outer gradually depleted.Ores mainly make up of granodiorite porphyry with a large number of sheeted auriferous quartz veins,stockworks and the typical unidirectional solidifition texture(UST) in contact,and a positive correlation with the gold grade.Metal sulphide content of the ore is very low(less than 2%).Alterations are first potassium and silicifiedand second kaolin in the intrusion,and widely illitization propylitization outer.Geochemical Character of Au±Bi±Te±W±As±Sn±Cu±W±Mo is similar to the intrusion-related gold deposits. Ore-bearing  quartz fluid is an aqueous solution containing CO2,with the native homogenization temperature of 430~550 ℃ and less than 380 ℃ and salinity of 0.88%~8.68% NaCl and 12.5%~17.5% NaCl.The study showed that the early ore-forming fluids come from the magma,and have varying degrees of precipitation with the uplift of the mineralization space and the mineralization process.Geochronology studies have shown that the molybdenite Re-Os isochron age of the granodioritic porphyry is 272.7±1.6 Ma,mineralization began in the late of the granodiorite magma.Deposit characteristics show that Bilihe gold deposit conforms to the across Eurasia global intrusion-related gold mineralization,and is a typical representative of the same type gold deposits in China.

Key words: Large gold deposit, Intrusion-related, Geological characteristics, Ore genesis, Bilihe, Inner Mongolia

中图分类号: 

  • P618.51
[1] McCoy D T,Newberry R J,Layer P W,et al.Plutonic related gold deposits of interior Alaska[C]//Goldfarb R J,Miller L D,eds.Mineral deposits of Alaska.Economic geology Monograph,1997,9:151-190.
[2] Sillitoe R H,Thompson J F H.Intrusion-related vein gold deposits: types, tectono-magmatic  settings  and difficulties of distinction from orogenic gold deposits[J].Resources Geology,1998,48(4):237-250.
[3] Thompson J F H,Sillitoe R H,Baker T,et al.Intrusion-related gold deposits associated with tungsten-tin provinces[J].Mineralium Deposita,1999,34:323-334.
[4] Lang J R,Baker T,Hart C J R,et al.An exploration model for intrusion-related gold system[J].Society of Economic Geologist Newsletter,2000,40(1):7-15.
[5] Lang J R,Baker T.Intrusion-related gold systems:the present level of understanding[J].Mineralium Deposita,2001,36(6):477-489.
[6] Smith M,Thompson J F H, Bressler J,et al.Geology of the Liese zone,Pogo property,east-central Alaska[J].Society of Economic Geologists Newsletter,1999,38(1):12-21.
[7] Goldfarb R J,Ayuso R,Miller M L,et al.The late Cretaceous Donlin Creek gold deposit, Southwestern Alaska:Controls on epizonal ore formation[J].Economic Geology,2004,99(4):643-671.
[8] Rombach C S,Newberry R J.Shotgun deposit:granite porphyry-hosted gold-arsenic mineralization in  southwestern Alaska,USA[J].Mineralium Deposita,2001,36:607-621.
[9] Malroof T L,Baker T,Thompson J F H.The Dublin Gulch intrusion-hosted gold deposits,Tombstone plutonic suite,Yukon Terxitory,Canada[J].Mineralium Deposita,2001,36(6):583-593.
[10] Marsh E E,Goldfarb R J,Hart C J R,et al.Geology and geochemistry of the Cleer Creek intrusion-related gold occurrences,Tintina Gold Provinces,Yukon,Canada[J].Canadian Journal of Earth Sciences,2003,400(5):681-699.
[11] Baker E  M,AndrewA S.Geologic,fluid inclusion,and stable isotope studies of the fold-bearing breccia Pipe at Kidston Queensland,Austraslia[J].Economic Geology,1991,86(4):810-830.
[12] Spiridinov E M.Granitic rocks and gold mineralization of North Kazakhstan[C]//Shatov V,Seltmann  R,Kremenetsky A,eds.Granite-related ore deposits of central  Kazakhstan and adjacent areas.Glagol Publishing House,St Petersburg,1996:197-217.
[13] 葛良胜,卿敏,袁士松,等.危机矿山接替资源勘查找矿的思路、技术与方法——以内蒙古毕力赫金矿勘查突破为例[J].矿物学报,2007,27(增): 503-505.
[14] 葛良胜,卿敏,袁士松,等.内蒙古毕力赫大型金矿勘查突破过程及启示意义[J].矿床地质,2009,28(3):390-402.
[15] 葛良胜, 卿敏,张文钊,等.华北板块北缘首例大型高品位隐伏斑岩型金矿床——内蒙古毕力赫金矿[J].中国地质, 2009,36(9):1110-1122.
[16] Richard H,John F H,Thompson.Intrusion-Related Vein Gold Deposits:Types,Tectono-Magmatic Settings and Difficulties of Distinction from Orogenic Gold Deposits[J].Resource Geology,1998,48(2):237-250.
[17] Baker T,Lang J R.Fluid inclusion characteristics of intrusion related gold mineralization,Tombstone-Tungsten magmatic belt, Yukon Territory,Canada[J].Mineralium Deposita,2001,36:563-582.
[18] Baker T.Emplacement depth and carbon dioxide-rich fluid inclusions in intrusion-related gold deposits[J].Economic Geology,2002,97(5):1111-1117.
[19] Nie F J,Jiang S H,Liu Y.Intrusion-related gold deposits of North China Craton,People’s Republic of China[J].Resource Geology,2004,54(3):299-324.
[20] Bierlein F P,McKnight S.Possible intrusion-related gold systems in the western lachlan orogen,southeast Australia[J].Economic Geology,2005,100(2):385-398.
[21] 陈琦,邹新民.内蒙造山带南部古板块构造演化[J].地质论评,1993,39(6):478-483.
[22] 曾庆栋,刘建明,张作伦,等.华北克拉通北缘西拉沐沦钥多金属成矿带钼矿化类型、特征及地球动力学背景[J].岩石学报,2009,25(5):1225-1238.
[23] 卿敏,唐明国,葛良胜,等.内蒙古苏右旗毕力赫金矿区安山岩LA-ICP-MS锆石U-Pb年龄、元素地球化学特征及其形成的构造环境[J].岩石学报,2012,28(2):514-524.
[24] 郝百武.内蒙古哈达庙地区构造—岩浆演化与金成矿作用研究[D].北京:中国地质科学院,2010:1-160.
[25] Cox K G,Bell J D,Pankhurst R J.The interpretation of igneous rocks[M].Allen and Unwin,London,1979:450.
[26] Wright J B.A simple alkalinity ratio and its application of non-orogenic granite genesis[J].Geological  Magazine to questions,1969,106:370-384.
[27] Bowden P.The geochemistry and mineralization of alkaline ring complexes in Africa(a review)[J].Journal of African Earth Sciences,1985,3(1-2):17-39.
[28] Pearce J.A,Harris N B W,Tindle A G.Trace element discrimination diagrams for the tectonic interpretation of granitic rocks[J].Journal of petrology,1984,25(4):956-983.
[29] 路彦明,潘懋,卿敏,等.内蒙古毕力赫含金花岗岩类侵入岩锆石U-Pb年龄及地质意义[J].岩石学报,2012,28(3):993-1004.
[30] 江迎飞.内蒙古毕力赫金矿床地质特征及成因[D].北京:中国地质科学院,2011:1-79.
[31] Shannon JR,Walker BM,Carten RB,et al.Unidirectional solidification textures and their significance in  determining relative ages of intrusions at the Henderson mine,Colorado[J].Geology,1982,10:293-297.
[32] 杨志明.西藏驱龙超大型斑岩铜床——岩浆作用及矿床成因[D]. 北京:中国地质科学院,2008:1-150.
[33] Clayton R N,O’Neil J R,Mayeda T K.Oxygen isotope exchange between quartz and water[J].Geophys,Res.,1972,77:3057-3067.
[34] Ludwig K R.Using Isoplot/Exversion:A geochronological toolkit for Microsoft Excel[M].Berkeley Geochronology Center Special Publication,1999,1a:1-50.
[35] 卿敏,葛良胜,唐明国,等.内蒙古苏尼特右旗毕力赫大型斑岩型金矿床辉钼矿Re-Os同位素年龄及其地质意义[J].矿床地质,2011,30(1):11-20.
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