哈萨克斯坦科翁腊德斑岩型铜矿地质特征与成矿模式

韩淑琴; 陈宣华; 杨农; 陈正乐; 施炜; 叶宝莹

哈萨克斯坦科翁腊德斑岩型铜矿地质特征与成矿模式

1.
中国地质科学院地质力学研究所, 北京 100081
2.
中国地质大学(北京), 北京 100083

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:
韩淑琴(1964-), 女, 黑龙江人, 研究员, 主要从事矿床地质和全球矿产资源战略研究。E-mail: sqhan2008@yahoo.cn

中图分类号: P618.41
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- 被引次数: 0
出版历程
- 收稿日期: 2010-05-20
- 刊出日期: 2010-06-28

GEOLOGICAL CHARACTERISTICS AND METALLOGENIC MODEL OF SUPER-LARGE KOUNRAD PORPHYRY COPPER DEPOSIT, KAZAKHSTAN

1.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijijng 100081, China
2.
China University of Geosciences, Beijing 100083, China

摘要

摘要: 哈萨克斯坦巴尔喀什成矿带科翁腊德斑岩型铜矿床从发现至今已经走过了70年的历程, 它是发育在陆缘弧环境的典型超大型斑岩型矿床, 具有花岗闪长岩型斑岩铜矿成因模式。矿床围岩蚀变与矿石矿物组合的垂直和水平分带明显, 氧化带和次生硫化物富集带矿石品位高, 易开采。矿床整体属于浅部成矿, 受环状构造控制, 次生石英岩和泥化等蚀变与矿床的关系最为密切。目前该矿床已开发殆尽, 前景堪忧。
- 科翁腊德 /
- 斑岩型铜矿床 /
- 地质特征 /
- 成因模式 /
- 开发前景
Abstract: The Kounrad porphyry copper deposit was discovered 70 years ago in the Balkhash Metallogenic Belt of the Central Asian Metallogenic Domain, . It is a typical super-large porphyry copper deposit developed under the tectonic environment of continental margin arc, with a metallogenic model of granodiorite. The vertical and lateral zonings of the wall rock alteration and ore mineral assemblages are obviously observed in the deposit. High content ore in the leaching zone and the ore deposition at a very shallow depth made it easy to be mined. It is suggested that the metallogenesis of the deposit was controlled by the circular structure, and had a very close relation with the secondary quartzite and argillic alteration.
- Kounrad /
- porphyry copper deposit /
- geological characteristics /
- metallogenic model /
- developing future

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图 1 科翁腊德斑岩铜矿床巨型露天采坑

Figure 1. Open mining pit of the Kounrad porphyry copper deposit

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图 2 科翁腊德斑岩铜矿床地质略图

1.现代沉积; 2.辉绿玢岩脉; 3.热液角砾岩带(中石炭世); 4.爆破角砾岩(1期); 5.爆破角砾岩(2期); 6.闪长玢岩脉; 7.花岗闪长斑岩脉; 8.花岗闪长斑岩岩株; 9.花岗闪长斑岩(早石炭世), 为科翁腊德矿床的含矿侵入岩; 10.辉绿岩墙; 11.霏细岩(早石炭世); 12.熔结凝灰岩; 13.致密块状、球粒状、杏仁状和条带状流纹岩、流纹斑岩(早石炭世); 14.致密块状流纹岩、石英斑岩(早石炭世); 15.流纹质凝灰岩(早石炭世); 16.线型断裂; 17.环状断裂; 18.早石炭世火山-沉积地层, 主要为安山岩、英安岩、凝灰岩、硅质粉砂岩和凝灰质砂岩; 19.富矿体; 20.矿体周边; 21.贫矿体; 22.采坑边界

Figure 2. Geological sketch of the Kounrad porphyry copper deposit

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图 3 科翁腊德斑岩铜矿床矿体剖面构造示意图

(据文献[12, 14])
1.次生石英岩; 2.角岩化安山岩、辉绿斑岩及凝灰岩、砂岩、粉砂岩; 3.花岗斑岩; 4.闪长斑岩脉; 5.氧化带和次生硫化物带; 6.原生矿石带; 7.原生浸染矿石带; 8.勘探钻孔; 9.采坑边界

Figure 3. Cross section profile showing ore body zoning of the Kounrad porphyry copper deposit

(after references[12, 14])

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图 4 科翁腊德斑岩铜矿床矿物分带图

(据文献[13])
1.黄铁矿; 2.黄铁矿-辉钼矿; 3.黄铁矿-黄铜矿; 4.黄铁矿-辉铜矿; 5.斜方硫砷铜矿-锑硫砷铜矿; 6.斜方硫砷铜矿-辉铜矿; 7.黄铜矿-磁铁矿-黄铁矿; 8.辉钼矿-石英; 9.黝铜矿-闪锌矿; 10.重晶石-黄铜矿-闪锌矿-方铅矿; 11.菱铁矿; 12.工业矿体边界; 13.采坑边界

Figure 4. Mineral zoning of the Kounrad porphyry copper deposit

(after references[13])

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图 5 科翁腊德斑岩铜矿床成矿模式

(据文献[14])
1.卡尔卡拉林组:安山玄武岩、安山云英岩、安山岩及其凝灰岩; 2.砂岩、粉砂岩; 3.阿克恰套群浅色花岗岩; 4.巴尔喀什群晚期花岗闪长斑岩; 5.巴尔喀什群主期花岗闪长岩; 6.含红柱石次生石英岩; 7.石英闪长斑岩脉; 8.斑状花岗岩墙岩脉; 9.热液喷发(爆破)角砾岩(两期); 10.冷缩和外力裂隙; 11.淋滤带和氧化带; 12.二次硫化物富集带; 13.原生矿体带; 14.辉钼矿带; 15.泥化、角岩化、青磐岩化; 16.原生矿体界限, 带分界; 17.流体运移方向

Figure 5. Metallogenic model for the Kounrad porphyry copper deposit

(after references[14])

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