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摘要:
麻利索克（Maniitsoq）位于格陵兰首府努克以北约160km处，是近年新发现的超大型高品位镍铜矿床。北美镍业公司对该矿床进行了一系列的勘查活动，累计施工钻探29840m，其中MQ-16-117钻孔268.70~342.75m段长74.05m的岩心中，Ni含量1.08%，Cu含量0.54%。由于中国科技界和企业对走出去参与格陵兰地区的矿产勘查开发甚感兴趣，因此系统研究该矿床的地质特征与资源潜力很有必要。全面收集、分析了该矿床的有关资料，并和中国的金川镍矿进行对比，结果显示，麻利索克镍铜矿为"小岩体成大矿"的典型代表，属于深部"熔离-贯入成矿"成矿机制；根据以往的勘查资料，评价其镍的金属量为195×104t，为世界级规模，建议中国企业重点关注。
Abstract:The Maniitsoq deposit is located about 160km north of Nuuk, the capital of Greenland. The deposit is a very large highgrade nickel-copper deposit discovered in recent years. The mine owners North American Nickel Company has carried out a series of exploration activities in the deposit, the cumulative drilling has reached 29840m, of which a 74.05m long core at he depth of 268.70~342.75m in MQ-16-117 drill hole has nickel content of 1.08% and copper content of 0.54%. As the Chinese scientists and enterprises are very interested in going abroad to participate in mineral exploration and development of Greenland area, the systematic understanding of geological characteristics of the deposit and resource potential is extremely necessary. The authors comprehensively collected and analyzed the relevant data of the deposit, and compared it with China's Jinchuan nickel ore deposit. The results show that the Maisuoke nickel-copper deposit is a "small rock body forming a large deposit" and a typical representative of the "deep liqua-tion-injection mineralization" ore-forming mechanism. Based on the previous survey data, the authors hold that the metal content of the nickel is 19.5 million tons, which has reached the world class scale, and the Chinese enterprises should pay due attention to this situation.
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Key words:
- Maniitsoq /
- Greenland /
- nickel copper deposit /
- potential evaluation
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表 1 麻利索克与金川超大型岩浆铜-镍-铂族金属硫化物矿床地质特征对比
Table 1. Geological comparative study of two Ni-Cu-Co sulfide deposits of Maniitsoq and Jinchuan
矿床名称 麻利索克矿床 金川矿床 构造环境 格林兰西南部太古宙片麻岩基底中 中朝地台与元古宙海之间的裂谷带中 成
岩成
特成
征岩体分布 格陵兰西南部苏长岩侵入带中 沿推覆大断裂上盘呈带状分布 规模 勘查中 1.34km2，岩墙状，长6500m，宽几米至500m 岩浆系列 科马提岩系列、玄武岩系列 拉斑玄武岩系列 岩石组合 橄榄岩、苏长岩、镁铁质辉长岩和富镁闪长岩。粒度多数为中等粒度到中粗粒度 二辉橄榄岩、斜长二辉橄榄岩、橄榄二辉岩、二辉岩、纯橄榄岩，粒度为中细粒相-中粗粒相-中粒相呈依次侵入的顺序 围岩 片麻岩、角闪岩及一些年轻的花岗岩侵入体 顶板为花岗片麻岩、混合岩、斜长角闪岩、大理岩。底板为大理岩、黑云母片麻岩等 成岩时代 2500~3000Ma 1477.4~1539.4Ma 矿成
床成
特成
征矿体分布 苏长岩带以点状产出 在区域上岩带成点状单独产出 矿石类型 半块状矿石、块状矿石、角砾状矿石、浸染状矿石、网脉状矿石、气孔状矿石 浸染状矿石、海绵陨铁状矿石、块状矿石，稠密浸染状、脉状、块状矿石、云雾状 主要金属矿物 镍黄铁矿、磁黄铁矿、黄铁矿和黄铜矿 磁黄铁矿、镍黄铁矿、黄铜矿、方黄铜矿、马基诺狂、墨铜矿、紫硫镍铁矿、褐硫钾镍铁矿等 平均Cu· Ni（Co）·PGE Cu· Ni（Co）·PGE 成矿元素组合及其特点 0.83% Ni、0.224% Cu、0.03% Co 1.06% Ni、0.73% Cu、0.02%~0.05% Co Ni/Cu=1.46 成矿机制 深部熔离-裂隙贯入式 就地熔离矿体、深熔-贯入矿体、晚期贯入矿体、接触交代矿体、热液叠加矿体 资料来源 [2-4, 6, 11, 13, 16] [28-33] 
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[1] 聂凤军, 石成龙, 赵元艺, 等.北极圈及邻区金属矿床地质特征、形成作用与找矿潜力[J].中国地质, 2012, 39(4):865-868. http://www.cnki.com.cn/Article/CJFDTOTAL-DIZI201204003.htm
[2] 李九玲, 卢伟, 赵元艺, 等.格陵兰重要金属矿简介及分布规律[J].地质科技情报, 2013, 32(5):18-24. http://www.cnki.com.cn/Article/CJFDTOTAL-DZKQ201305005.htm
[3] 卢伟. 格陵兰重要金属矿产成矿规律与找矿方向研究[D]. 中国地质大学(北京)硕士学位论文, 2014.
http://cdmd.cnki.com.cn/Article/CDMD-11415-1014238528.htm [4] North American Nickel Inc. PwC Website Greenland-Taxes on corporate income[DB/OL] (2016-01)[2016-03] http://s1.q4cdn.com/825764637/files/doc_presentations/2016/NAN_Corporate_Presenation_November_2016.pdf.
[5] 李怀渊, 张景训, 江明忠, 等.航空瞬变电磁法系统VTEMplus的应用效果[J].物探与化探, 2016, 40(2):360-364. http://www.cnki.com.cn/Article/CJFDTOTAL-WTYH201602020.htm
[6] North American Nickel Inc.Greenland maniitsoq projects[EB/OL] (2016-01)[2016-03] http://www.northamericannickel.com/English/projects/greenland/maniitsoq/default.aspx. 2016.
[7] 杨日红, 陈秀法, 赵宏军, 等.遥感技术在格陵兰岛西南部费斯肯纳色特一带找矿中的应用[J].地质与勘探, 2013, 49(4):751-757. http://www.cnki.com.cn/Article/CJFDTOTAL-DZKT201304020.htm
[8] Szilas K, Berger A, Kokfelt T F, et al. Geochemistry of the supra-crustal rocks and the associated intrusive TTG suites of the Archaean craton in South-West Greenland and southern West Greenland, 61° 30'-64°N[J]. Danmarks Greenlands Geologiske Undersegelse Rap-port, 2011, 114:88-90.
[9] Larsen L M, Pedersen A K. A minor carbonatite occurrence in south-ern WestGreenland:the Tupertalik intrusion[J]. Rapport Greenlands Geologiske Undersegelse, 1982, 110:3-43.
[10] Garde A A. Post-kinematic diorite intrusions in Archaean base-ment rocks around outer Fiskefjord, southern West Greenland[J]. Bulletin of the Geological Society of Denmark, 1991, 39:167-177.
[11] Garde A A, McDonald I, Dyck B, et al. Searching for giant, ancient impact structures on Earth:The Mesoarchaean Maniitsoq structure, West Greenland[J]. Earth and Planetary Science Letters, 2012, 4:337/338:197-210.
[12] 聂凤军, 张伟波, 曹毅, 等.北极圈及邻区重要矿产资源找矿勘查新进展[J].地质科技情报, 2013, 32(5):1-6. http://www.cnki.com.cn/Article/CJFDTOTAL-DZKQ201305003.htm
[13] North American Nickel Inc. Independent Technical Report for the Maniitsoq Nickel-Copper-PGM Project, Greenland[EB/OL] (2016-03)[2017-03-15] http://www.northamericannickel.com/English/projects/greenland/maniitsoq/default.aspx.
[14] Reiners, P W, Nelson B K, Ghiorso M S. Assimilation of felsic crust by basaltic magma:Thermal limits and extents of crustal contamina-tion of mantle-derived magmas[J]. Geology, 1995, 23:563-566. doi: 10.1130/0091-7613(1995)023<0563:AOFCBB>2.3.CO;2
[15] Steenfelt A, Garde A A, Moyen J F. Mantle wedge involvement in the petrogenesis of Archaean grey gneisses in West Greenland[J]. Lithos, 2005, 79:207-228. doi: 10.1016/j.lithos.2004.04.054
[16] Garde A A, Pattison J, Kokfelt T F, et al. The norite belt in The Mesoarchaean Maniitsoq structure, southern West Greenland:con-duit-type Ni-Cu mineralisation in impact-triggered, mantle-de-rived intrusions[J]. Geological Survey of Denmark and Greenland Bulletin, 2013, 28:45-48. http://connection.ebscohost.com/c/articles/89640679/norite-belt-mesoarchaean-maniitsoq-structure-southern-west-greenland-conduit-type-ni-cu-mineralisation-impact-triggered-mantle-derived-intrusions
[17] McKenzie D. O'Nions R K. Partial Melt Distributions from Inver-sion of Rare Earth Element Concentrations[J]. Journal of Petrolo-gy, 1991, 5:1021-1091. https://academic.oup.com/petrology/article-abstract/32/5/1021/1499015/Partial-Melt-Distributions-from-Inversion-of-Rare
[18] Sun S S, McDonough W F. Chemical and isotopic systematics of oce-anic basalts:implications for mantle composition and processes[C]//Saunders A D, Norry M J. Magmatism in the Ocean Basins. Geo-logical Society (London)Special Publications, 1989, 42:313-345.
[19] Wittig N, Pearson D G, Webb M, et al. Origin of cratonic litho-spheric mantle roots:A geochemical study of peridotites from the North Atlantic Craton, West Greenland[J]. Earth and Planetary Sci-ence Letters, 2008, 274:4-33. https://www.sciencedirect.com/science/article/pii/S0012821X0800407X
[20] Larsen L M, Rex D C. A review of the 2500Ma span of alkaline-ul-tramafic, potassic and carbonatitic magmatism in West Greenland[J]. Lithos, 1992, 28:367-402. doi: 10.1016/0024-4937(92)90015-Q
[21] Wittig N, Webb M, Pearson D G, et al. Formation of the North Atlantic Craton:Timing and mechanisms constrained from ReOs isotope and PGE data of peridotite xenoliths from S.W. Greenland[J]. Chemical Geology, 2010, 276:166-187. doi: 10.1016/j.chemgeo.2010.06.002
[22] 汤中立, 焦建刚, 闫海卿, 等.小岩体成(大)矿理论体系[J].中国工程科学, 2015, 17(2):9-15. http://www.cnki.com.cn/Article/CJFDTOTAL-GCKX201502001.htm
[23] 赵增玉, 潘懋, 田甜, 等.固体矿产资源储量估算系统中垂直断面法的实现[J].地质与勘探, 2010, 46(3):547-551. http://www.cnki.com.cn/Article/CJFDTOTAL-DZKT201003024.htm
[24] 朱青凌, 罗周全, 刘晓明, 等.块体模型储量估算原理的应用研究[J].矿冶工程, 2012, 32(6):9-11. http://www.cnki.com.cn/Article/CJFDTOTAL-KYGC201206004.htm
[25] 李俊.固体矿产资源/储量估算方法研究现状及主要方法评价[J].中国非金属矿工业导刊, 2005, 46(2):53-55. http://www.cnki.com.cn/Article/CJFDTOTAL-LGFK200502018.htm
[26] 高强祖, 黄满湘.金川铜镍硫化物矿床成因探讨[J].西部探矿工程, 2006, 6:1-3. doi: 10.3969/j.issn.1004-5716.2006.01.001
[27] 高辉, 曹殿华, 范世家.岩浆铜-镍-铂族金属硫化矿床"深部熔离-贯入"成矿作用与模式——加拿大伏伊希湾和中国金川矿床地质特征对比[J].地质通报, 2009, 28(6):795-803. http://dzhtb.cgs.cn/ch/reader/view_abstract.aspx?flag=1&file_no=20090615&journal_id=gbc
[28] 焦建刚, 汤中立, 闫海卿, 等.金川铜镍硫化物矿床中富铜矿石铂族元素特征及矿床成因[J].西北地质, 2012, 45(4):244-249. http://www.cnki.com.cn/Article/CJFDTOTAL-XBDI201204026.htm
[29] 王瑞廷, 毛景文, 赫英, 等.金川超大型铜镍硫化物矿床的铂族元素地球化学特征[J].大地构造与成矿学, 2004, 28(3):281-284. http://www.cnki.com.cn/Article/CJFDTOTAL-DGYK200403007.htm
[30] 田毓龙, 包国忠, 汤中立, 等.金川铜镍硫化物矿床岩浆通道型矿体地质地球化学特征[J].地质学报, 2009, 83(10):1515-1518. doi: 10.3321/j.issn:0001-5717.2009.10.016
[31] 罗照华, 马拉库舍夫A A, 潘妮娅H A, 等.铜镍硫化物矿床的成因——以诺里尔斯克(俄罗斯)和金川(中国)为例[J].矿床地质, 2000, 19(4):336-338. http://www.cnki.com.cn/Article/CJFDTOTAL-KCDZ200004005.htm
[32] 汤中立.中国的小岩体岩浆矿床[J].中国工程科学, 2002, 4(6):9-12. http://www.cnki.com.cn/Article/CJFDTOTAL-GCKX200206002.htm
[33] 杨胜洪, 陈江峰, 屈文俊, 等.金川铜镍硫化物矿床的Re-Os年龄及意义[J].地球化学, 2007, 36(1):30-35. http://www.cnki.com.cn/Article/CJFDTOTAL-DQHX200701002.htm
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