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| 新疆乔夏哈拉铁铜金矿床与国内外IOCG矿床的对比研究 | |
| 引用本文： | 应立娟,王登红,李建康,陈郑辉,席忠,杨文华,刘乃忠.新疆乔夏哈拉铁铜金矿床与国内外IOCG矿床的对比研究[J].大地构造与成矿学,2008,32(3). |
| 作者姓名： | 应立娟 王登红 李建康 陈郑辉 席忠 杨文华 刘乃忠 |
| 作者单位： | 1. 中国地质科学院矿产资源研究所,北京,100037 2. 内蒙古第一地质矿产勘查开发院,内蒙古,土默特左旗,010100 3. 内蒙古地质调查院,内蒙古,呼和浩特,010020 4. 福建地质调查院,福建,福州,350011 |
| 基金项目： | 国家科技支撑计划，中国地质调查局地质调查项目，中国地质调查局地质调查项目，中国地质调查局地质调查项目，中国地质调查局地质调查项目 |
| 摘 要： | 随着IOCG矿床不断取得巨大的勘探成果,IOCG矿床在国内外都日益受到关注。新疆乔夏哈拉铁铜金矿床在构造环境、元素组合、蚀变特征等方面与国外典型的IOCG矿床有相似之处,乔夏哈拉铁铜金矿床处于大陆边缘拉张环境,具有Fe-Cu-Au(-REE)多元素组合,蚀变以绿帘石矽卡岩化为主,垂直分带不明显;在成矿时代方面又区别于多数产在元古代的IOCG矿床,而是在古生代;乔夏哈拉西矿区切割铁矿层的闪长岩脉角闪石的Ar-Ar坪年龄为378.1±3.6Ma,故铁的成矿年龄应在泥盆纪。本文认为乔夏哈拉铁铜金矿床不仅与IOCG矿床有较多相似之处,与国内内蒙古白云鄂博铁稀土铌矿床、云南迤纳厂铁铜稀土矿床、云南拉拉铜铁金钴钼稀土矿床和云南稀矿山铁铜矿床等也有相似之处,因此,在中国寻找IOCG矿床尤其是大型矿床,是有可能的。 |
| 关 键 词： | IOCG矿床 乔夏哈拉 铁铜金矿床 |
COMPARISONS BETWEEN THE QIAOXIAHALA FE-CU-AU DEPOSIT IN XINJIANG AND OTHER IOCG-TYPE DEPOSITS |
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| YING Lijuan,WANG Denghong,LI Jiankang,CHEN Zhenghui,XI Zhong,YANG Wenhua,LIU Naizhong.COMPARISONS BETWEEN THE QIAOXIAHALA FE-CU-AU DEPOSIT IN XINJIANG AND OTHER IOCG-TYPE DEPOSITS[J].Geotectonica et Metallogenia,2008,32(3). | |
| Authors: | YING Lijuan WANG Denghong LI Jiankang CHEN Zhenghui XI Zhong YANG Wenhua LIU Naizhong |
| Abstract: | IOCG (Iron-oxide-copper-gold) deposits have been attracting more and more attentions at home and abroad, since more and more exploration fruits on IOCG deposits are obtained in the world. The Qiaoxiahala Fe-Cu-Au deposit is, to some extent, similar to typical IOCG deposits abroad on tectonic settings, element and mineral combinations and alteration features. The Qiaoxiahala Fe-Cu-Au deposit is located in an extensional setting of the continental margin and has a multiple elements combination of Fe-Cu-Au(-REE). Its vertical zoning of alterations was not obvious, but epidotization skarn is the major alteration in those hot-water alterations. On metallogenic epoch, the Qiaoxiahala deposit was different from most IOCG deposits occurring in the Proterozoic, but in Paleozoic Era. The 40Ar/39Ar plateau age of hornblende from diorite vein in the western Qiaoxiahala mining district is at 378.1±3.6 Ma. Since this diorite vein cuts the magnetite layer, the iron mineralization might be completed in the Devonian. Through more comparisons between the Qiaoxiahala and other IOCG deposits in China, such as the Bayan Obo Fe-REE-Nb deposit in Inner Mongolia, Yinachang Fe-Cu-REE deposit, Lala Fe-Cu-Au-Co-Mo-REE deposit and Xikuangshan Fe-Cu deposit in Yunnan, it's promising to explore more IOCG deposits in China, especially those IOCG deposits at large scale, even ultragiant scale. |
| Keywords: | IOCG deposit Qiaoxiahala Fe-Cu-Au deposits |
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