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1 47 摇 3 摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇 GEOLOGY AND EXPLORATION Vol. 47 摇 No. 3 May,2011 1, 摇摇 2, 摇摇 1, 摇 1 (1., 摇 ;2., 摇 ) [ 摇 ], 4, 3,, [ ] 摇 VMS 摇摇 [ ] P P624 摇 [ ]A 摇 [ ] (2011) Hu Jian-yong, Yang Lun, Li Hui, Liu Jian-quan. Metallogeneis and prospect of gold deposits in Northeast Sudan. [ J]. Geology and Exploration,2011,47(3): 摇摇,, 3500 : (Hassai) ( Gebeit) ( Rida) ( Hamadi),,,, (,2004),,,,,, 1 摇 -, - ( Deschamps and Les 鄄 cuyer, 2002),, ( Stern,1994;Hargrove,2005) ( ) ( 1) 1 摇 Fig 1 摇 Map showing ancient plate sutures and gold mines in Northeast Sudan 1- ;2- ;3-1-suture zone; 2-Neoproterozoic; 3-gold mine - [ ] ;[ ] ;[ ] [ ] ( : ) [ ] (1971 -),,2007,,,,, hujytyut@ 126. com 505

2 摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇 2011,,,, U-Pb 4 (M1 ~ M4):M1 (825 ~ 800 Ma) M2 (785 ~ 745 Ma),, 着 Nd ( ~ +8. 5), Nd M3 (700 ~ 633 Ma) M4 (600 ~ 565 Ma), M3 ~ M4 着 Nd ( +7 ~ +4), Nd,, (Stern,1994), 3,, NE-SW, 3 N-S,, 2 摇 2. 1 摇 :, : 1) -,,,,, ( 40% ~ 60% ) ( 2% ~ 20% ) (0 ~ 30% ) (0 ~ 30% ) (3% ~ 20% ) (0 ~ 15% ), (0 ~ 20% ), 506 摇摇 2),,,, ( 逸 35% ) (0 ~ 25% ) (10% ~ 45% ) (2% ~ 18% ) (0 ~ 25% ) (0 ~ 8% ) (0 ~ 5% ), 3) -, -, ( 逸 50% ) (15% ~ 30% ) (5% ~ 15% ) (2% ~ 10% ) 4),, (4% ~ 12% ) (20% ~ 50% ) (5% ~ 20% ) (10% ~ 25% ), (7% ~ 38% ),,, 5) -,, : (35% ~ 60% ), (0 ~ 30% ), (0 ~ 25% ), (0 ~ 12% ), ( <5% ),, 6) -,, : (10% ~ 58% ), 48. 8%, ( 10% ~ 72% ), %, (0 ~ 10% ) (0. 5% ~ l5% ),, 3%, 7) -,, ( >50% )

3 3 摇摇摇摇摇摇摇摇摇摇 : 摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇 30%,,,,,,,, 2. 2 摇 ( 1),, 伊 10-9, (3. 5 伊 10-9 ), ( 伊 10-9 ), 冶, ( ) ( Joann 侉 s et al., 2002),, ( VMS)3 Ariab Ariab Ariab 5 ( 2):A,, ;B, ;C, Na, 2 :C1( ), B ;C2( ), B ;D, (10 ~ 100m), -, C2,D ;E,, 1 摇 ( 伊 10-9 ) Table 摇 1 Statistics of gold-bearing ratios of rocks (unit: 伊 10-9 ) Fig. 2 摇 2 摇 Ariab Sketch showing strata of the Ariab Formation 摇摇 : Joann 侉 s C., Vadala P. (2002), 3 摇 3. 1 摇 (Hassai),, 14, 60,,,,,, NEE -SWW, NW, 2,1,2 1, 3 ( NEE NW NNE) 507

4 摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇 2011 Ariab 3 : 1) - - ( SBR), - - ( SBR) - - ( SBR) ( VMS) 2),,,, 3) Cu-Au-Zn, Ariab D, Ariab VMS, 0. 3 ~ 25m, 2500m,,,,, VMS 702 依 15Ma(Barrie,2008), M3, VMS, ( ) 冶 3. 2 摇 (Gebeit), 5000kg (,1998) 508, - -,,, NE,, 9,,, 1. 0 ~ 伊 , : ; : ; : ~ 0. 05mm, 1 mm,,,, 3. 3 摇 (Hamadi), 10 -, , ~ 伊 10-6,, (,2008;, 2009;,2009), ( ) ( ) NEE -NE, NW, 20 毅 ~ 50 毅 ( ) SN SWW-NWW, 40 毅 ~ 70 毅 ( 3),,

第 3 期摇摇摇摇摇摇摇摇摇摇胡建勇等:苏丹东北部金矿成矿特征及成矿远景浅析摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇麻岩的面理或各种张性裂隙中( 胡建勇等,2008) 矿区岩层由于受构造影响,在西部和北部的片 ( 麻) 岩的片( 麻) 理总体呈 NEE -NE 向展布,倾向 NW,倾角 20毅 ~ 50毅在东部片( 麻) 理方向近 SN 倾向

5 第 3 期摇摇摇摇摇摇摇摇摇摇胡建勇等:苏丹东北部金矿成矿特征及成矿远景浅析摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇麻岩的面理或各种张性裂隙中( 胡建勇等,2008) 矿区岩层由于受构造影响,在西部和北部的片 ( 麻) 岩的片( 麻) 理总体呈 NEE -NE 向展布,倾向 NW,倾角 20毅 ~ 50毅在东部片( 麻) 理方向近 SN 倾向 SWW-NWW,倾角 40毅 ~ 70毅金矿体受褶皱构造片理化带及张性断裂岩性等控制,主要产在哈马迪背形的核部和两翼矿体赋存在蓝灰色石英脉及两侧围岩蚀变带内矿体呈脉状透镜状产状大多与围岩一致,极少数矿体产于穿层裂隙内矿石中金自然金形式存在金属矿物有黄铁矿毒砂和少量的白铁矿,次生氧化铁矿物为褐铁矿,偶见孔雀石;脉石矿物有石英石榴石钠长石绢云母角闪石,次为斜长石铁白云石绿泥石等矿石的结构主要是:它形-半自形粒状结构假象结构交代镶边结构交代残留结构交代蚕蚀结构环状结构矿石构造为:浸染状构造细脉状构造块状构造等 3. 4摇瑞达( Rida) 金矿瑞达金矿地处尼罗州尼罗河东侧,年产 100 万吨矿石的矿山于 2009 年底建成,目前处试生产阶段,已生产黄金近 100kg 瑞达金矿区的变质岩岩性与哈马迪相同矿体赋存在走向为 NNE 向的剪切带内目前开采对象是一条 200m 宽的矿体,控制长度 600 余米矿体图 3摇哈马迪金矿地质图 Fig. 3摇 Geologic map of the Hamadi gold deposit 平均品位 2. 43伊10-6 走向 NNE,倾角 70毅糜棱岩化砂糖状石英是矿体的主要特点,蚀变强度和糜棱 1-第四系坡积物冲积物及风成沙;2 -石英云母片岩;3 -绿岩化对应由内向外形成一定的蚀变分带主要围岩带;7-石英脉;8-闪长玢岩脉;9-大理岩;10-金矿体及编号; 石化片岩;4-角闪片岩;5 -斜长角闪片麻岩;6 -含矿片理化蚀变 11-及矿化蚀变体及其编号;12-地质界线 1-Quaternary;2-quartmica schist;3 -green schist;4 -amphibole schist;5-plagioclase amphibole gneiss; 6-ore-bearing alteration belt;7-quartz vein;8-diorite porphyrite;9-marble;10-orebody;11-mineralization belt;12-geological boundary 矿毒砂和少量的白铁矿,次生氧化铁矿物为褐铁矿,偶见孔雀石;脉石矿物有石英石榴石钠长石绢云母角闪石,次为斜长石铁白云石绿泥石等矿石的结构主要是:它形-半自形粒状结构假象结构交代镶边结构交代残留结构交代蚕蚀结构环状结构矿石构造为:浸染状构造细脉状构造块状构造等区内出露的地层为一套新元古界中深变质岩组合,岩性岩性主要为片麻岩和片岩,呈互层状大量分布的石英呈透镜状或脉状产于片岩片蚀变是: 硅化绢云母化黄铁矿化绿泥石化方解金矿体明显受韧性剪切带控制矿体呈带状展布,矿体规模较大矿化剪切带包括剪切石带内的石英细脉和碳酸盐岩,大部分细脉几乎平行方向产出,金和硫化物就产在石英细脉中,矿化类型是充填裂隙石英脉矿石中金以自然金形式存在金属矿物有黄铁矿毒砂脉石矿物有石英绢云母绿泥石碳酸盐钠长石角闪石等地表高岭土化强烈矿石的结构主要是:它形 -半自形粒状结构假象结构交代结构压碎结构矿石构造为:糜棱片理化构造块状构造等 4摇苏丹东北部金矿床成因类型及控矿因素苏丹东北部是阿拉伯 - 努比亚地盾的组成部 509

6 摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇 2011, 冶,, : 1) 3, 2) 3) ( ) -,,, (,2008) ( ) VMS (,1996) 4) VMS 冶, Zn, Au(Cottard et al., 1986 ; Abu Fatima,2006), Ag As, 5 摇, 3, VMS 1) -, ; ) (,2009) VMS ( ), ; ; 510 3) ( ),,,, 4),,,,,,,, [ References] Abu Fatima,M Metallogenic genesis and geotectonic evolution of the polymetallic massive sulphides and the associated gold deposits at Ariab Arbaat Belt,Red Sea Hills,Sudan:unpublished Ph. D. thesis,universite Henri Poincare,Nancy,France,1-340 Barrie, C. T Lead isotope analysis of the Ariab and Nuba Moun 鄄 tanis areas, Sudan:Updated interpretation:unpublished internal re 鄄 port for La Mancha Rresources,1-5 Cottard F, Braux C, Cortial P, Deschamps Y, El Samani Y, Hotitn, AM, and Omar Younis M Lesamas sulfur 佴 s polym 佴 talliques et les min 佴 ralisations aurif 侉 res du district d 爷 Ariab ( Red Sea Hills, Soudan). Historique de la d 佴 couverte, cadre g 佴 ologique et princi 鄄 paux caract 侉 res des gisements. Chron. Rech. Min. no. 483,19-40 Cottard, F., Deschamps, Y., Braux, C., Elsamani, Y Gold deposits in the Ariab area : BRGM report 86SDN 110 Deschamps Y., Lescuyer J. L., S 佴 lection de zones 伽 potentiel aurif 侉 re dans les Red Sea Hills, NE Sudan, BRGM / RC FR, 1-45 Hargrove,Ulysses S.,Stern, Robert J.,Griffin,William R.,Manton,Wil 鄄 liam I., and Johnson, Peter R The arabian - nubian shield from island arc to craton: timescales of juvenile crust formation and the extent of pre-neoproterozoic crust[ A]. Salt Lake City Annual Meeting[M]. 494 Hu Jian-yong, Hu Jin-cai, Liu Jian-quan Geological exploration report of gold mine, Block 20, the repubilc of the Sudan[R]. Ref 鄄 erence Room of Tianjin North China Geological Exploration Bureau: 1-80 Joann 侉 s C., Vadala P Northeastern Bayuda gold project ( Su 鄄 dan). Third campaign ( ). BRGM / RC FR,1-39 La Mancha Resources Inc Hassai south Cu-Au VMS deposit, Su 鄄 dan resource estimates[ R]. Information Centre of GRAS,1-177 Mo Jiang-ping, Huang Jie, Feng Guo-yu Mineralization mecha 鄄 nism research of shear zone gold deposits in northern guangxi prov 鄄 ince[ J]. Geology and exporation. 45 (6 ): ( in Chinese with English abstract) Ren Xiao-an, Shen Rui-jin, Chen Xian-liang A superficial dis 鄄 cussion on geological characteristics of Gebeit gold ore, Sudan[ J].

7 3 摇摇摇摇摇摇摇摇摇摇 : 摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇摇 Hunan Geology, 17(1):34-36( in Chinese with English abstract) Shen Liu-sheng, Gao Zhou, Wang Ling Research on control factor and prospecting direction of gold deposit in chifeng-chaoyang area [ J]. Contributions to Geology and Mineral Resources Research,23 (2): ( in Chinese with English abstract) Song Guo-ming The guide for mine industrial capital investment in Africa[M]. Beijing: Geological publishing house:1-346 ( in Chi 鄄 nese) Song Ming- chun, Cui Shu - xue,yang Zhi - li, Jiang Hong - li, Yang Cheng-hai, Jiao Xiu-mei Great progress and far - reaching significance of deep exploration in the jiaojia metallogenic belt, Shandong province[j]. Geology and Exploration,44 (1):1-8 ( in Chinese with English abstract) Stern, R. J Arc assembly and continental collision in the Neoprot 鄄 erozoic east African orogen: implications for the consolidation of gondwanaland. - Annu [ A]. Rev. Earth Planet. Scien [ C]. 22, Xu Ke-qin, Wang He - nian, Zhou Jian - ping, Zhu Jin - chu A discussion on the exhalative sedimentary massive sulfide deposits of south China[ J]. Geological journal of China universities. Vol 2(3), ( in Chinese with English abstract) Zhang Dao-zhong, Yang Chang-zheng, Lv Qiu-xia Analysis on mineralization geological background and congditions of Hamadi gold mine in Sudan[A]. Africa economic geology[m] ( in Chi 鄄 nese with English abstract) Zhao Peng, Li Zhen - shan, Liang Hui Analysis of mineralizing rules and action of Hamadi gold mine[ A]. Africa economic geology [ M] ( in Chinese with English abstract) Zhou Yun-man,Mao Jing-wen,Zhang Chang-qing The ore-con 鄄 trolling structures and the regularitis of the mineralization enrichment of the xiaoshuijing gold deposit in middle Yunnan[ J]. Geology and Exporation,45(5): ( in Chinese with English abstract) [ ],, Block20 [R]. :1-80,, [J].,45(6): ,, [ J].,17(1):34-36, 摇, 摇 [J]. 23(2): [M]. : :1-346,,,,,. [J].,44(1):1-8,,, [J].,2(3): ,, [A]. [M] 摇,, [A]. [M] ,, [J].,45(5): Metallogeneis and Prospect of Gold Deposits in Northeast Sudan HU Jian-yong 1, YANG Lun 2, LI Hui 1, LIU Jian-quan 1 (1. Tianjin North China Geological Exploration General Institute, Tianjin 摇 ; 2. Tianjin North China Geological Exploration Bureau, Tianjin ) Abstract:Based on the regional tectonic setting, gold-bearing formation and geochemical characters of gold mines in Northeast Sudan, we have ana 鄄 lyzed ore-body occurrence regulations, deposit types and their structural characteristics of four representative gold deposits that are well studied,i. e. the Hassai, Gebeit, Rida and Hamadi gold mines. It is suggested that at least there are three types of gold deposits in this region, which are quartz vein, duc 鄄 tile shear zone and volcanic massive sulfide (VMS) types. The gold mineralization is in close connection with host rock formations and tectonics. We pro 鄄 pose a new approach for surveys of gold deposits in deserts of Northeast Sudan by using remote sensing and geochemical exploration. Key words:ductile shear zone, VMS deposit, metallogenic prospect, Sudan 511

km 5 km Pt 2 x 2 1 Au 65 ~ ~ km 5 km 10 km 2 Au Au

km 5 km Pt 2 x 2 1 Au 65 ~ ~ km 5 km 10 km 2 Au Au 38 1 2015 3 JOURNAL OF EAST CHINA INSTITUTE OF TECHNOLOGY Vol. 38 No. 1 Mar. 2015 doi 10. 3969 /j. issn. 1674-3504. 2015. 01. 002 1 2 1 2 3 1. 471000 2. 471000 3. 510640 9 P618. 51 A 1674-3504 2015 01-0012-11.