巴尔喀什成矿带奎干-玛依布拉克斑岩型铜矿区矿床地质特征与开发前景分析

王志宏; 陈宣华; 杨农; 陈正乐; 韩淑琴

巴尔喀什成矿带奎干-玛依布拉克斑岩型铜矿区矿床地质特征与开发前景分析

中国地质科学院地质力学研究所, 北京 100081

基金项目:

国家科技支撑计划重点项目 2007BAB25B02

详细信息

作者简介:
王志宏(1987-), 男, 硕士研究生, 构造地质学专业矿田构造研究方向。E-mail: zhwang1987@126.com

中图分类号: P618.41
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出版历程
- 收稿日期: 2010-05-07
- 刊出日期: 2010-06-28

THE GEOLOGICAL CHARACTERISTICS AND DEVELOPMENT PROSPECTS OF KUIGAN-MAIBULAK COPPER ORE DEPOSITS IN BALKHASH METALLOGENIC BELT

Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijijng 100081, China

摘要

摘要: 哈萨克斯坦巴尔喀什湖南侧的奎干-玛依布拉克铜矿区位于巴尔喀什成矿带环巴尔喀什-准噶尔成矿省楚伊犁-北天山成矿亚省的西北部, 发育一系列中小型斑岩型铜矿床。本文概要介绍了奎干-玛依布拉克铜矿区矿床地质、围岩蚀变、成矿作用、矿石矿物组成与主要矿床特征, 并分析了铜矿床开发的前景。该铜矿区含矿岩石主要为花岗闪长斑岩, 成矿元素组合主要为Cu-Au-Mo, 具有与巴尔喀什湖北侧科翁腊德、阿克斗卡等超大型斑岩型铜矿床类似的地质特征, 说明了巴尔喀什成矿带斑岩型铜矿床的分布跨越了巴尔喀什湖, 在湖南侧也具有较好的斑岩铜矿成矿远景。
- 奎干-玛依布拉克铜矿区 /
- 巴尔喀什成矿带 /
- 斑岩型铜矿床 /
- 成矿远景
Abstract: The Kuigan-Maibulak copper ore region on south bank of the Balkhash Lake is geologically located at the northwestern part of to the Chuyili-North Tianshan metallogenic sub-province, which is belonging to the circum-Balkhash-Junggar metallogenic province of the Balkhash metallogenic belt. It is composed of a series of small or medium porphyry copper deposits. This paper gives a brief introduction of geological features, wall-rock alterations, mineralizations, and mineral assemblages of the ore region and the main characteristics of the deposits, including Kaskirmis, Vostok Ⅱ and Ⅲ porphyry and vein-type copper deposits, and the Vostok Ⅰ Mo-chalcopyrite deposit, the evaluation of the reserves, the development and prospects of the deposits. According to the granodiorite porphyry magmatism and Cu-Au-Mo mineralization series of the Kuigan-Maibulak copper ore region, it is suggested that the Kuigan-Maibulak copper ore region and the North Balkhash copper deposit belt (with super-large Kounrad and Aktogai porphyry copper deposits and so on) on south and north banks of the Balkhash Lake have similar geological characteristics for porphyry copper deposit. The Kuigan-Maibulak copper ore region is considered to be an ore-forming and prospective zone for super-large porphyry copper deposits.
- Kuigan-Maibulak copper ore region /
- Balkhash metallogenic belt /
- porphyry copper deposit /
- prospecting

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图 1 巴尔喀什地区地质简图及矿区位置

(据Heinhorst J等, 2000^[11]; 转自朱永峰等, 2007^[2])

Figure 1. Sketched geological map of the Kuigan-Maibulak copper ore-field

(taken from Heinhorst J et al., 2000^[11]; after Zhu Yongfeng, et al, 2007^[2])

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图 2 奎干-玛依布拉克矿区

(据V.V.Kolesnikov et al, 转引自Abdulin et al, 1998)^[5]
1.上石炭统-下二叠统英安流纹岩建造; 2.下石炭统陆源沉积建造; 3.下石炭统粗玄岩建造; 4.中、上泥盆统粗面安山岩-粗面英安岩-粗面流纹岩建造; 5.志留系碳酸盐-陆源沉积建造; 6.上奥陶统陆源沉积-碳酸盐建造; 7.上寒武统-下奥陶统硅质-碳酸盐陆源沉积建造; 8.下二叠统碱性花岗岩建造; 9.花岗正长岩-花岗岩; 10.辉长岩-二长岩-正长岩建造:辉长岩-二长岩、二长闪长岩(a), 花岗闪长岩、石英正长岩(b); 11.中、晚泥盆世花岗闪长岩-花岗岩建造; 12.晚奥陶世英云闪长岩-花岗闪长岩-斜长花岗岩; 13.不同类型交代岩; 14-18.矿石建造: 14.铜钼斑岩(Tologaisky型), 15.钼铜斑岩(Almalinsky型), 16.钼铜斑岩(科翁腊德型), 17.交代岩型铜锌矿, 18.黄铁长英岩(青磐岩)型铅锌矿; 岩石化学异常: 19.铜(a)、铅(b); 20.锌(a)、钼(b); 21.钨(a)、砷(b); 22.金(a)、银(b); 23.构造断层:区域(a)、局部(b); 24. (a)岩体, (b)矿床; 侵入岩体(方框内编号): 1. Shet-Agdalinsky岩体, 2. Balatoparsky岩体, 3. Kuigansky岩体, 4. Akkolsky岩体, 5. Akdalinsky岩体; 矿床: Ⅰ-Kaskarmys, Ⅱ-Somizkol, Ⅲ-东方Ⅰ矿床, Ⅳ-东方Ⅱ矿床, Ⅴ-东方Ⅲ矿床, Ⅵ-东方Ⅳ矿床, Ⅶ-东方Ⅴ矿床, Ⅷ-Zhideli矿床; 断层: ① Akdalinsky断层, ② Maibulaksky断层, ③ Kokdombaksky断层, ④ Akkolsky断层, ⑤ Karatogansky断层。

Figure 2. Geological sketch of the Kuigan-Maibulak copper ore-field

(taken from V.V.Kolesnikov et al.; after Abdulin et al, 1998)^[5]

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图 3 卡斯克尔梅斯矿床网状脉矿体

(据Yu.N.Romanov和V.V.Kolesnikov; 转引自Abdulin et al, 1998)^[5]
1.古-新近系粘土; 2.英安-安山玢岩; 3.英安岩; 4.火山灰凝灰岩夹层; 5.酸性凝灰质熔岩; 6.凝灰质角砾岩; 7.厚层白榴石流纹岩-英安岩; 8.花岗闪长斑岩; 9. (a)辉绿岩墙, (b)闪长玢岩; 10.闪长岩岩墙; 11.交代岩带界线; 12.酸性阶段交代岩: (a)强烈绢云母化、石英绢云母岩, (b)绢云母化、绿泥石化; 13-14.碱性阶段交代岩: 13.强烈硅化、长石化和石英网状脉; 14. (a)长石化、硅化, (b)黑云母化; 15.矿石: (a)氧化矿石, (b)原生黄铜矿; 16.构造断层; 17.钻孔。

Figure 3. Ore stockwork at Kaskyrmys

(taken from Yu.N.Romanovand V.V.Kolesnikov; after Abdulin et al., 1998)^[5]

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图 4 东方Ⅰ矿床中的网状脉体

(据O.N.Selivanov和V.V.Kolesnikov; 转引自Abdulin et al, 1998)^[5]
1.下志留统砂页岩建造夹喷发火山岩砂岩层; 2.水热隐爆角砾岩; 3.次生石英岩; 4.泥化作用; 5.辉铜矿-硫砷铜矿矿石; 6.古-新近系粘土; 7.花岗闪长斑岩; 8.交代岩带界线; 9.酸性阶段交代岩: (a)强烈绢云母化、石英绢云母岩, (b)绢云母化、绿泥石化; 10. (a)长石化、硅化, (b)黑云母化; 11-钻孔。

Figure 4. Ore stockwork at VostokⅠ

(taken from O.N.Selivanov andV.V.Kolesnikov; after Abdulin et al., 1998)^[5]

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图 5 东方Ⅲ矿床中的矿带

(据O.N.Selivanov和V.V.Kolesnikov; 转引自Abdulin et al, 1998)^[5]
1~2.矿石: 1.辉铜矿(次生硫化物富集带), 2.辉铜矿-黄铜矿(混合); 3.古-新近系粘土; 4.花岗闪长斑岩; 5.交代岩带界线; 6.绢云母化、绿泥石化; 7.强烈硅化、长石化和石英网状脉; 8. (a)长石化、硅化, (b)黑云母化; 9.钻孔。

Figure 5. Ore zone at Vostok Ⅲ

(taken fromO.N.Selivanov and V.V.Kolesnikov; after Abdulin et al., 1998)^[5]

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