新疆西南天山布隆金矿床类型与成矿模式
收稿日期: 2014-05-04
修回日期: 2014-07-20
网络出版日期: 2015-01-14
基金资助
中国地质调查局项目“新疆哈拉奇地区区域地质矿产调查”(编号:1212011120495)资助
Gold Deposit Type and Metallogenic Model of the Bulong Gold Deposit in Southwest Tianshan,Xinjiang
Received date: 2014-05-04
Revised date: 2014-07-20
Online published: 2015-01-14
布隆金矿是新疆西南天山的一座小型金矿床,金矿体主要赋存在层间滑脱断裂中,围岩为泥盆系紫红色、灰黑色砂岩和粉砂岩,成矿时代与中亚南天山金矿床的成矿时代一致,为晚二叠世。通过与中亚浅变质碎屑岩型金矿和新疆西南天山萨瓦亚尔顿金矿地质特征的对比研究可知,布隆金矿成矿特征基本符合浅变质碎屑岩型金矿的特点,其矿床类型应为浅变质碎屑岩型。矿区泥盆系克孜尔塔格组碎屑岩Au(Ba)元素浓集系数高、变化系数大,该地层为金矿的主要矿源岩;布隆断裂既是矿区已知矿脉的导矿断裂,也是容矿断裂。在分析控矿因素的基础上,建立了矿床成矿模式,指出泥盆系与石炭系不整合面和克孜尔塔格组千枚岩化灰黑色砂岩是下一步找矿的重要目标。
徐述平 , 宋建潮 , 宋贺民 . 新疆西南天山布隆金矿床类型与成矿模式[J]. 黄金科学技术, 2014 , 22(6) : 7 -11 . DOI: 10.11872/j.issn.1005-2518.2014.06.007
Bulong gold deposit formed in late-Permian is a small scale gold deposit in Southwest Tianshan,Xinjiang.Orebodies are mainly located in detachment fault belts between layers of Devonian purple,grey-black sandstones and siltstones.Through a comparative research on low metamorphic clastic rock gold deposit in Central Asia,Sawayardun gold deposit in Southwest Tianshan and Bulong gold deposit,a crucial conclusion is made that Bulong gold deposit is a low metamorphic clastic rock gold deposit type.Devonian Kezrtage formation clastic rock,which has a distinct geochemical feature of high Au coefficients of concentration and variation,is an origin of ore elements.Bulong fault is considered as a transport and precipitation fault.Metallogenic model is established according to analyzing ore-controlling factors and unconformable faults between Devonian and Carboniferous strata and gray-black phyllitic sandstones are advised to prospect ores.
[1] 杨富全,吴海.新疆布隆金矿床地质特征及成因[C]//中国地质科学院562综合大队集刊.北京:地质出版社,1999.
[2] 杨富全,毛景文,王义天.新疆阿合奇县布隆金矿床成矿流体及成矿作用[J].地学前缘,2004,11(2):501-514.
[3] 杨建国,杨林海,吕昌国,等.西南天山布隆金矿床成矿作用同位素地质年代学[J].地球学报,2006,27(1):51-55.
[4] 刘家军,李恩东,龙训荣,等.新疆布隆金矿床的成矿特征与成矿时代[J].地质与勘探,2004,40(5):6-11.
[5] 张良臣.新疆的宝藏[M].乌鲁木齐:新疆人民出版社,1990.
[6] 张良臣,刘德权,王有标,等.中国新疆优势金属矿产成矿规律[M].北京:地质出版社,2006.
[7] 陈奎,郑东,康江伟.新疆阿合奇县布隆金矿普查地质报告[R].阿克苏:新疆地勘局第八地质大队,1999.
[8] 王有标,赵殿甲.中国新疆金矿床[M].北京:地质出版社,2006.
[9] 叶锦华,王立本,叶庆同,等.西南天山萨瓦亚尔顿金(锑)矿床成矿时代与赋矿地层时代[J].地球学报,1999,20(3):278-283.
[10] 赵仁夫,杨建国,王满仓,等.西南天山成矿地质背景研究及找矿潜力评价[J].西北地质,2002,35(4):101-121.
[11] 王卫平.天山西南段乌恰—柯坪地区航磁磁场特征与成矿远景预测[J].铀矿地质,2001,17(3):162-167.
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