新疆卡拉麦里带石英脉型金矿化形成的构造背景

金属矿山 ›› 2014, Vol. 43 ›› Issue (03): 111-115.

新疆卡拉麦里带石英脉型金矿化形成的构造背景

聂晓勇^1,2，苏大勇¹，杨向东²

1.中国地质大学地球科学与资源学院，北京 100083；2.中国人民武装警察部队黄金第八支队,新疆乌鲁木齐 830057

出版日期:2014-03-15 发布日期:2014-04-28
基金资助:
* 中国地质调查局项目(编号：1212011085018)。

Tectonic Setting of the Formation of Quartz-vein Type Gold Mineralization in Kalamali Gold Belt of Xinjiang

Nie Xiaoyong^1,2，Su Dayong¹，Yang Xiangdong²

1.School of Geosciences and Resources，China University of Geosciences，Beijing 100083，China；2.No.8 Gold Branch of Chinese People's Armed Police Force，Urumchi 830057，China

Online:2014-03-15 Published:2014-04-28

摘要/Abstract

摘要： 通过调查发现，卡拉麦里带中石英脉型金矿化的容矿岩系包括蛇绿岩、火山碎屑-沉积建造两类。研究其中沉积类容矿岩石硅质岩、碎屑岩的主量元素、微量元素的地球化学特征，得出硅质岩的w(MnO)/w(TiO₂)值为1.3~3.7，w(Al₂O₃)/w(Al₂O₃+Fe₂O₃)值为0.08~0.36，稀土元素北美页岩标准化模式曲线近水平，δCe/δCe*小于1，δLa/δCe值为1.12~1.93，判定其沉积环境为受扩张洋脊热液活动影响强烈的大洋盆地，碎屑岩形成于物源受到大洋岛弧影响的大陆岛弧环境。进一步确定了蛇绿岩中火山岩具体就位于弧前环境，讨论了石英脉型金矿化与火山岩的密切相关性，推测它们均可能为310~325 Ma间岛弧系统下洋脊俯冲的产物；认为与洋脊俯冲相关热液活动在不同环境下分别有不同的表现，在洋底玄武岩附近沉积热水成因硅质岩，在两类容矿岩系构造裂隙中沉淀含金石英脉。

关键词: 构造背景, 容矿岩系, 石英脉型, 金矿带, 卡拉麦里

Abstract: According to the geological survey results，the ore-hosting rock series of quartz-vein type gold mineralization in Kalamali gold belt is made up of ophiolite and tephra-sedimentation formations.The geochemistry characteristics of main and trace elements among sedimentary types of ore rock siliceous rocks and clastic rocks are researched.Then,w(MnO)/w(TiO₂) value and w(Al₂O₃)/w(Al₂O₃+Fe₂O₃) value of siliceous rocks is 1.3~3.7 and 0.08~0.36 respectively.The standardization mode curve of REE among north American shale is close to the horizontal level，the δCe/δCe* value is less than 1,δLa/δCe value is 1.12~1.93.It is determined that the sedimentary environment is the oceanic basin that affected by spreading ridge hydrothermal activities seriously.Clastic rocks come from the continental island arc which sources are affected by the oceanic island arc.It is further confirmed that，volcanic rocks of ophiolite are forming in fore-arc area.The close relationship between the quartz-vein type mineralization and the volcanic rocks is discussed，and they both maybe the product of subduction of oceanic ridge under the island arc system between 310~315 Ma.The hydrothermal activities under different environments has different performance，that is to say，the hydrothermal sediment siliceous rocks is deposited near the ocean floor basalt，and the gold-bearing quartz veins deposited in tectonic fractures of two host rock series.

Key words: Tectonic setting, Host rock series, Quartz-vein type, Gold belt, Kalamaili

聂晓勇, 苏大勇, 杨向东. 新疆卡拉麦里带石英脉型金矿化形成的构造背景[J]. 金属矿山, 2014, 43(03): 111-115.

NIE Xiao-Yong, SU Da-Yong, YANG Xiang-Dong. Tectonic Setting of the Formation of Quartz-vein Type Gold Mineralization in Kalamali Gold Belt of Xinjiang[J]. Metal Mine, 2014, 43(03): 111-115.

[1]	关开荣, 葛嘉骏, 张治敏. 基于STM32 的自动分拣机器人研发[J]. 金属矿山, 2024, 53(12): 223-.
[2]	郭鹏, 陈建立, 陈英男, 魏从玲, 薛艳. 河南老湾金矿带原生晕地球化学特征及深部找矿意义[J]. 金属矿山, 2022, 51(01): 205-212.
[3]	魏军, 王恩德, 刘福兴, 王伟. 辽宁凤城白云金矿带地质特征、矿床成因及找矿方向[J]. 金属矿山, 2019, 48(08): 120-130.
[4]	陈建立, 郭鹏, 陈英男, 赵焕, 魏从玲, 张宏燕. 豫西南老湾金矿原生晕地球化学特征及深部成矿预测[J]. 金属矿山, 2019, 48(07): 124-134.
[5]	梁远琴, 刘全军, 赵刘闯, 念家飞. 贵州某低品位石英脉型金矿石选矿试验[J]. 金属矿山, 2017, 46(05): 89-92.
[6]	宋焕霞, 景明, 赵桂军, 宛克勇. 湖南仙人岩金矿床地质特征及找矿方向[J]. 金属矿山, 2015, 44(12): 107-110.
[7]	晏全香, 蒋丰明. 福建某石英脉型钼矿选矿试验[J]. 金属矿山, 2014, 43(02): 73-78.
[8]	杜淑华, 陈利民, 廖力. 某石英脉型微细粒嵌布低品位金矿石选矿试验[J]. 金属矿山, 2013, 42(10): 63-66+75.
[9]	马东, 王生伟. 东川地区菜园子辉绿岩地球化学及构造特征[J]. 金属矿山, 2012, 41(08): 88-91.

扫码分享