GEOLOGICAL CHARACTERISTICS AND METALLOGENIC MODEL OF SUPER-LARGE PORPHYRY COPPER DEPOSIT IN AKTOGAI ORE FIELD, KAZAKHSTAN
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摘要:
中亚成矿域巴尔喀什成矿带阿克斗卡矿田主要由阿克斗卡、艾达里和库兹尔基亚等矿床组成, 是发育在火山岛弧环境的典型斑岩型Cu-Mo-Au矿床群, 其中阿克斗卡为超大型斑岩铜矿。斑岩型铜成矿作用发生在晚古生代哈萨克马蹄形构造形成过程中, 成矿构造背景为乌拉尔-天山断裂系统的大型左行走滑作用和大陆地壳侧向增生过程, 具有典型的斑岩铜矿围岩蚀变和矿石矿物分带特征; 成矿作用受东西向、北东东向和北西西向断裂控制, 主要与早期碱性阶段的硅化蚀变有关, 酸性蚀变阶段发生了再矿化与富集成矿作用; 据含矿花岗闪长岩中锆石SHRIMP定年本文给出主要成矿时代为327.5 ± 1.9 Ma (早石炭世晚期), 成矿模式为"花岗闪长岩"型, 属于浅成斑岩铜矿成矿系统。
Abstract:The Aktogai ore field consists of a group of porphyry Cu-Mo-Au deposits, such as Aktogai, Aidarly, and Kyzylkia deposits, in the Balkhash Metallogenic Belt of the Central Asian Metallogenic Domain. They are formed in the Balkhash volcanic arc of the north-central margin of Kazakhstan Orocline due to the large left-leteral strike-slip movement of the Ural-Tianshan Fault System and lateral crust-growth in the Late Paleozoic. Among them, the Aktogai deposit is a superlarge porphyry Cu-Mo-Au deposit. All of them are porphyry deposits with typical zoning of wallrock alterations and mineral assemblages. The metallogenesis is mainly related to the silicification of the early-stage alkaline alteration and the redeposition in the acid alteration stage. The occurrence of ore-bodies is controlled by the E-W, ENE, and WNW trending faults. The SHRIMP zircon dating of granodiorite has given the Aktogai deposit a metallogenic age of 327.5 ± 1.9 Ma in the late period of the Early Carboniferous. The deposit model of the porphy deposits in the Aktogai ore field is concluded as "granodiorite" type in the hypabyssal porphyry copper system.
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Key words:
- Aktogai /
- porphyry copper deposit /
- geological characteristics /
- metallogenic model
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图 2 阿克斗卡矿田斑岩型铜矿床:A-艾达里, B-阿克斗卡, C-库兹尔基亚(据Yu. A. Sergiiko et al.转引自Abdulin et al. 1998[11])
Figure 2.
图 5 阿克斗卡矿床热液蚀变岩石(A下)和气-液包裹体(A上)造岩元素含量的相对变化, 以及热液蚀变岩中成矿元素含量的相对变化(B) (据Bespaev and Miroshnichenko, 2004[10])
Figure 5.
图 7 阿克斗卡斑岩铜矿床地质-地球化学模式(据Ceprийко Ю. А, Ивдев Р. Р et al., 2002;转引自刘春涌, 2005[12])
Figure 7.
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[1] 陈宣华, 陈正乐, 杨农.区域成矿与矿田构造研究:构建成矿构造体系[J].地质力学学报, 2009, 15 (1):1 ~15. doi: 10.3969/j.issn.1006-6616.2009.01.001 http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?file_no=20090101&flag=1
CHEN Xuanhua, CHEN Zhengle, YANG Nong. Study on regional mineralizations and ore-field structures:bring on the building of mineralizing tectonic systems[J]. Journal of Geomechanics, 2009, 15 (1):1~15 (in Chinese with English abstract). doi: 10.3969/j.issn.1006-6616.2009.01.001 http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?file_no=20090101&flag=1
[2] 何国琦, 朱永峰.中国新疆及其邻区地质矿产对比研究[J].中国地质, 2006, 33 (3):451~460. doi: 10.3969/j.issn.1000-3657.2006.03.001
HE Guo-qi, ZHU Yong-feng. Comparative study of the geology and mineral resources in Xinjiang, China, and its adjacent regions[J]. Geology in China, 2006, 33 (3):451~460 (in Chinese with English abstract). doi: 10.3969/j.issn.1000-3657.2006.03.001
[3] 朱永峰, 何国琦, 安芳.中亚成矿域核心地区地质演化与成矿规律[J].地质通报, 2007, 26 (9):1167~ 1177. doi: 10.3969/j.issn.1671-2552.2007.09.018
ZHU Yongfeng, HE Guoqi, AN Fang. Geological evolution and metallogeny in the core part of the Central Asian metallogenic domain[J]. Geological Bulletin of China, 2007, 26 (9):1167~1177 (in Chinese with English abstract). doi: 10.3969/j.issn.1671-2552.2007.09.018
[4] 陈宣华, 王志宏, 杨农, 等.中亚巴尔喀什成矿带萨亚克大型铜矿田矿床地质特征与成矿模式[J].地质力学学报, 2010, 16 (2):189~202. doi: 10.3969/j.issn.1006-6616.2010.02.008 http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?flag=1&file_no=20100207&journal_id=dzlxxb
CHEN Xuanhua, WANG Zhihong, YANG Nong, et al. Geological Characteristics and Metallogenic Model of Large-scale Sayak Skarn Copper Ore Field, Balkhash Metallogenic Belt, Central Asia[J]. Journal of Geomechanics, 2010, 16 (2):189~202. doi: 10.3969/j.issn.1006-6616.2010.02.008 http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?flag=1&file_no=20100207&journal_id=dzlxxb
[5] 韩淑琴, 陈宣华, 杨农, 等.哈萨克斯坦科翁腊德斑岩型铜矿地质特征与成矿模式[J].地质力学学报, 2010, 16 (2):203~212. doi: 10.3969/j.issn.1006-6616.2010.02.009 http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?flag=1&file_no=20100208&journal_id=dzlxxb
HAN Shuqin, CHEN Xuanhua, YANG Nong, et al. Geological characteristics and metallogenic model of super-large Kounrad porphyry copper deposit, Kazakhstan[J]. Journal of Geomechanics, 2010, 16 (2):203~212. doi: 10.3969/j.issn.1006-6616.2010.02.009 http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?flag=1&file_no=20100208&journal_id=dzlxxb
[6] 王志宏, 陈宣华, 杨农, 等.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[J].地质力学学报, 2010, 16 (2):213~222. doi: 10.3969/j.issn.1006-6616.2010.02.010 http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?flag=1&file_no=20100209&journal_id=dzlxxb
WANG Zhihong, CHEN Xuanhua, YANG Nong, et al. The geological characteristics ang development prospects of deposits in Kuigan-Maibulak copper ore region in Balkhash metallogenic belt[J]. Journal of Geomechanics, 2010, 16 (2):213~222. doi: 10.3969/j.issn.1006-6616.2010.02.010 http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?flag=1&file_no=20100209&journal_id=dzlxxb
[7] 赵恒乐, 陈宣华, 屈文俊, 等.巴尔喀什成矿带博尔雷斑岩铜矿床地质特征与成矿时代[J].地质力学学报, 2010, 16 (4):340~348. doi: 10.3969/j.issn.1006-6616.2010.04.002 http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?flag=1&file_no=20100402&journal_id=dzlxxb
ZHAO Hengle, CHEN Xuanhua, QU Wenjun, et al. Geological characteristics and metallogenic age of Borly porphyry Cu deposits in Balkhash metallogenic belt, Kazakhstan[J]. Journal of Geomechanics, 2010, 16 (4):340~348 (in Chinese with English abstract). doi: 10.3969/j.issn.1006-6616.2010.04.002 http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?flag=1&file_no=20100402&journal_id=dzlxxb
[8] 李勇, 陈宣华, 屈文俊, 等.巴尔喀什成矿带阿克沙套云英岩型钨钼矿床地质特征与铼-锇同位素测年分析[J].地质力学学报, 2010, 16 (4):349~358. doi: 10.3969/j.issn.1006-6616.2010.04.003 http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?flag=1&file_no=20100403&journal_id=dzlxxb
LI Yong, CHNE Xuanhua, QU Wenjun, et al. Geological characteristics and Re-Os isotopic dating of Akshatau greisen-type W-Mo deposit in Balkhash metallogenic belt[J]. Journal of Geomechanics, 2010, 16 (4):349~358 (in Chinese with English abstract). doi: 10.3969/j.issn.1006-6616.2010.04.003 http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?flag=1&file_no=20100403&journal_id=dzlxxb
[9] Yakubchuk A. Architecture and mineral deposit settings of the Altaid orogenic collage:a revised model[J]. Journal of Asian Earth Sciences, 2004, 23:761~779. doi: 10.1016/j.jseaes.2004.01.006
[10] Bespaev Kh A, Miroshnichenko L A. Atlas of Mineral Deposit Models[M]. Almaty, Kazakhstan: K. I. Satpaev Institute of Geological Sciences, 2004, 1~141.
[11] Abdulin A A, Bespaev H A, Daukeev C Zh, Miroshnichenko L A, Votsalevskiy E S. Copper deposits of Kazakhstan, reference book[M]. Almaty, Kazakhstan: Ministry of Ecology and Natural Resources of the Republic of Kazakhstan, 1998, 1~136.
[12] 刘春涌.哈萨克斯坦阿克斗卡特大型斑岩铜矿床[J].中亚信息, 2005, (6):28~30. http://d.old.wanfangdata.com.cn/Periodical/dizhixb201202008
LIU Chunyong. Aktogai super-large porphyry copper deposit in Kazakhstan[J]. Central Asian Information, 2005, (6): 28~30 (in Chinese). http://d.old.wanfangdata.com.cn/Periodical/dizhixb201202008
[13] Zvezdov V S, Migachev I F, Girfanov M M. Porphyry copper deposits of the CIS and the models of their formation[J]. Ore Geology Reviews, 1993, 7:511~549. doi: 10.1016/0169-1368(93)90013-O
[14] Seltmann R, Porter T M. The porphyry Cu-Au/Mo deposits of Central Eurasia: 1. Tectonic, geologic and metallogenic setting and significant deposits. In: Porter T M. Ed. Super Porphyry Copper and Gold Deposits: A Global Perspective [M], v2. Porter GeoConsultancy Pty Ltd. Publishing, Adelaide, 2005, 467~512.
[15] 李光明, 秦克章, 李金祥.哈萨克斯坦环巴尔喀什斑岩铜矿地质与成矿背景研究[J].岩石学报, 2008, 24 (12):2679~2700. http://d.old.wanfangdata.com.cn/Periodical/ysxb98200812003
LI Guangming, QIN Kezhang, LI Jinxiang. Geological features and tectonic setting of porphyry copper deposits rounding the Balkhash region, Central Kazakhstan, Central Asia[J]. Acta Petrologica Sinica, 2008, 24 (12):2679~2700 (in Chinese with English abstract). http://d.old.wanfangdata.com.cn/Periodical/ysxb98200812003
[16] Sergiiko Yu A, Volkhina T M, Kydyrbekov L U, Yunusov B I. Medno-portirovie mestorozhdenia Aktogaiskogo raiona (Porphyry copper deposits of Aktogai district)[J]. Razvedka i Okhrana Nedr, 1984, 11:10~15 (in Russian).
[17] Singer D A, Berger V I, Menzie W D, Berger B R. Porphyry copper deposit density[J]. Economic Geology, 2005, 100: 491~514. doi: 10.2113/gsecongeo.100.3.491
[18] Syromyatnikova N G, Kolesnikov V V, Ilyin V A, Bekmagambetov D B, Kovalskiy V S, Ostapova N V, Lupareva N P, Filimonova L E, Plotnikova V P. Isotope dating of copper-porphyry mineralisation and ore-controling intrusions of the Aktogay ore field (northeast Balkhash area). Isotope dating of endogenic ore formations. Conference abstract volume, Kiev, 1990, 76~79 (in Russian).
[19] Heinhorst J, Lehmann B, Ermolov P, Serykh V, Zhurutin S. Paleozoic crustal growth and metallogeny of Central Asia: evidence from magmatic-hydrothermal ore systems of Central Kazakhstan[J]. Tectonophysics, 2000, 328:69~87. doi: 10.1016/S0040-1951(00)00178-5
[20] Ermolov P V. Crust-derived crystalline inclusions in granitoid systems of Kazakhstan as a source of petrological information. In: Shatov V, Seltmann R, Kremenetsky A, Lehmann B, Popov V, Ermolov P. Eds. Granite-related Ore Deposits of Central Kazakhstan and Adjacent Areas[M]. Glagol Publ. House, St Petersburg, 1996, 301~314.
[21] Krivtsov A I. Geologicheskie Osnovy Prognozirovaniya i Poiskov Medno-porfirovih Mestorozhdenii[M]. (Geological Fundamentals of Forecasting and Exploration of Porphyry Copper Deposits. ) Moscow, Nedra, 1983, 1~255 (in Russian).
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