西藏隆子县邦卓玛金矿床成矿模式与找矿模型
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摘要
邦卓玛金矿是藏南冈底斯-喜马拉雅金锑多金属成矿带最具找矿潜力的矿床之一,分析和研究邦卓玛地区金矿床成因、成矿模式对于确定该区成矿类型及进一步找矿具有重要的指导和借鉴意义。收集邦卓玛地区金矿床成矿大地构造背景、区域地层、构造、岩浆岩等方面的资料,对该区的地层和岩浆岩地球化学特征与含矿性进行了分析。研究表明,邦卓玛金矿床以上三叠统涅如组为容矿地层和初始矿源,早白垩世中基性侵入岩和古近纪、新近纪的酸性侵入岩体提供热能、动能和部分成矿物质。其次,从地层、岩浆岩、构造、氢氧硫铅同位素等方面对控矿因素和矿床成因进行分析,初步圈定了5个金矿体,揭示了成矿物质和成矿流体来源。综合分析认为,该矿床属浅成低温热液型矿床。在上述基础上,初步建立了该矿床的成矿模式和综合找矿模型。
The Bangzhuoma gold deposit is one of the most potential deposit for prospecting in Gangdise-Himalaya Au-Sb polymetallic metallogenic belt of southern Tibet. The analysis and study of the genesis and metallogenic model of the Bangzhuoma gold deposit have important guiding and reference significance for defining the mineralization type and carrying out the further oreprospecting work. After collecting the geological data of the Bangzhuoma gold deposit, such as ore-forming tectonic background,regional strata, geological structure and igneous rocks, the authors analyzed geochemical characteristics and ore-bearing potential of the host strata and igneous rocks in this area. The results show that the Upper Triassic strata seem to have been its host rocks which might have provided initial ore source, and the medium-basic intrusive rocks of Early Cretaceous and the acid intrusive rocks of Neogene provided thermal energy, kinetic energy and some ore-forming materials. In addition, the ore-controlling factors and ore deposit genesis of the deposit were analyzed systemically in the aspects of strata, magmatic rocks, structure and H-O-S-Pb isotopes.Five orebodies were delineated preliminarily, and the sources of ore-forming materials and fluids were revealed. Based on the results obtained, the authors hold that the Bangzhuoma gold deposit bears low temperature shallow-seated hydrothermal features. The metallogenic model and prospecting pattern of this ore deposit were established on the basis of the above-mentioned study.
The Bangzhuoma gold deposit is one of the most potential deposit for prospecting in Gangdise-Himalaya Au-Sb polymetallic metallogenic belt of southern Tibet. The analysis and study of the genesis and metallogenic model of the Bangzhuoma gold deposit have important guiding and reference significance for defining the mineralization type and carrying out the further oreprospecting work. After collecting the geological data of the Bangzhuoma gold deposit, such as ore-forming tectonic background,regional strata, geological structure and igneous rocks, the authors analyzed geochemical characteristics and ore-bearing potential of the host strata and igneous rocks in this area. The results show that the Upper Triassic strata seem to have been its host rocks which might have provided initial ore source, and the medium-basic intrusive rocks of Early Cretaceous and the acid intrusive rocks of Neogene provided thermal energy, kinetic energy and some ore-forming materials. In addition, the ore-controlling factors and ore deposit genesis of the deposit were analyzed systemically in the aspects of strata, magmatic rocks, structure and H-O-S-Pb isotopes.Five orebodies were delineated preliminarily, and the sources of ore-forming materials and fluids were revealed. Based on the results obtained, the authors hold that the Bangzhuoma gold deposit bears low temperature shallow-seated hydrothermal features. The metallogenic model and prospecting pattern of this ore deposit were established on the basis of the above-mentioned study.
引文
[1]郑有业,刘敏院,孙祥,等.西藏扎西康锑多金属矿床类型、发现过程及意义[J].地球科学(中国地质大学学报),2012,37(5):1003-1014.
[2]梁维,郑远川,杨竹森,等.藏南扎西康铅锌银锑多金属矿多期多阶段成矿特征及其指示意义[J].岩石矿物学杂志,2014,33(1):64-78.
[3]于淼.藏南扎西康锑铅锌银矿床地质及成矿流体特征[D].中国地质大学(北京)硕士学位论文,2015.
[4]王军,张均,郑有业.西藏南部马扎拉金锑矿成矿规律初探[J].黄金科学技术,2001,9(4):5-11.
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[6]张建芳,郑有业,张刚阳,等.西藏北喜马拉雅马扎拉金锑矿床地质特征及成矿作用[J].黄金,2011,1:20-24.
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[8]周天成,孙祥,郑有业,等.藏南查拉普金矿床载金矿物特征与金的赋存状态[J].矿床地质,2015,34(3):521-532.
[9]董富权,胡可卫,李武毅,等.西藏隆子县恰嘎村辉锑矿地质特征及找矿潜力[J].地质找矿论丛,2015,30(1):98-102.
[10]娄元林,陈武,陈东太,等.西藏隆子县恰嘎锑矿4号脉原生晕特征及深部找矿预测[J].西北地质,2016,49(4):146-164.
[11]陈东太,陈武,胡可卫,等.西藏隆子县邦卓玛金矿床地质特征及地球化学异常特征[J].黄金,2016,37(8):25-28.
[12]陈永清,卢映祥,夏庆霖,等.云南保山核桃坪铅锌矿床地球化学特征及其成矿模式与找矿模型[J].中国地质,2015,32(1):90-99.
[13]胡可卫,陈武,董富权,等.西藏古堆地区成矿系列、成矿谱系研究及其找矿意义[J].矿产与地质,2016,30(5):761-767.
[14]黎彤,袁怀雨,吴胜昔,等.中国大陆壳体的区域元素丰度[J].大地构造与成矿学,1999,23(2):101-107.
[15]任冲,刘顺,朱利东,等.藏南哲古基性岩SHRIMP锆石U-Pb年龄及地质意义[J].四川地质学报,2014,34(4):881-890.
[16]任冲.西藏措美地区早白垩世岩浆岩地质年代学、地球化学及地质意义[D].中国地质大学(北京)硕士学位论文,2015.
[17]黄小东.藏南拆离系江孜-隆子金-锑成矿带成矿规律与找矿方向研究[D].成都理工大学硕士学位论文,2011.
[18]张刚阳.藏南金锑多金属成矿带成矿模式与找矿前景研究[D].中国地质大学(武汉)博士学位论文,2012.
[19]杨良哲,任刚,齐利平,等.东天山白石泉一带铜镍矿成矿模式及找矿模型[J].新疆地质,2011,29(4):428-432.
[20]刘长纯,杨仲杰,王成龙,等.辽宁肖家营子钼多金属矿成矿模式与找矿模型[J].世界地质,2012,31(2):238-246.
[21]蒋成兴,卢映祥,陈永清,等.滇西南芦子园超大型铅锌多金属矿床成矿模式与综合找矿模型[J].地质通报,2013,32(11):1832-1844.
[22]王瑞廷,谭兴华,李福让,等.石泉县羊坪湾金矿床成矿模式及其找矿模型[J].西北地质,2013,46(2):93-98.
[23]赵志新,杨宝荣,陈冬,等.西天山哈尔嘎嘎林恩铜金矿床地质特征及综合找矿模型[J].地质科技情报,2015,34(4):84-91.
[24]任军平,许康康,相振群,等.南非维特沃特斯兰德盆地绍斯迪普金矿床地质特征、成矿模式和找矿模型[J].地质通报,2015,34(6):1217-1226.
(1)武警黄金第十一支队.西藏哲古—日当一带铅锌锑多金属矿远景调查评价报告. 2017.
[2]梁维,郑远川,杨竹森,等.藏南扎西康铅锌银锑多金属矿多期多阶段成矿特征及其指示意义[J].岩石矿物学杂志,2014,33(1):64-78.
[3]于淼.藏南扎西康锑铅锌银矿床地质及成矿流体特征[D].中国地质大学(北京)硕士学位论文,2015.
[4]王军,张均,郑有业.西藏南部马扎拉金锑矿成矿规律初探[J].黄金科学技术,2001,9(4):5-11.
[5]王军,张均.西藏南部马扎拉金锑矿成矿特征及找矿方向[J].黄金地质,2001,7(3):15-20.
[6]张建芳,郑有业,张刚阳,等.西藏北喜马拉雅马扎拉金锑矿床地质特征及成矿作用[J].黄金,2011,1:20-24.
[7]郑有业,多吉,马国桃,等.藏南查拉普岩金矿床特征、发现及时代约束[J].地球科学(中国地质大学学报),2007,32(2):185-193.
[8]周天成,孙祥,郑有业,等.藏南查拉普金矿床载金矿物特征与金的赋存状态[J].矿床地质,2015,34(3):521-532.
[9]董富权,胡可卫,李武毅,等.西藏隆子县恰嘎村辉锑矿地质特征及找矿潜力[J].地质找矿论丛,2015,30(1):98-102.
[10]娄元林,陈武,陈东太,等.西藏隆子县恰嘎锑矿4号脉原生晕特征及深部找矿预测[J].西北地质,2016,49(4):146-164.
[11]陈东太,陈武,胡可卫,等.西藏隆子县邦卓玛金矿床地质特征及地球化学异常特征[J].黄金,2016,37(8):25-28.
[12]陈永清,卢映祥,夏庆霖,等.云南保山核桃坪铅锌矿床地球化学特征及其成矿模式与找矿模型[J].中国地质,2015,32(1):90-99.
[13]胡可卫,陈武,董富权,等.西藏古堆地区成矿系列、成矿谱系研究及其找矿意义[J].矿产与地质,2016,30(5):761-767.
[14]黎彤,袁怀雨,吴胜昔,等.中国大陆壳体的区域元素丰度[J].大地构造与成矿学,1999,23(2):101-107.
[15]任冲,刘顺,朱利东,等.藏南哲古基性岩SHRIMP锆石U-Pb年龄及地质意义[J].四川地质学报,2014,34(4):881-890.
[16]任冲.西藏措美地区早白垩世岩浆岩地质年代学、地球化学及地质意义[D].中国地质大学(北京)硕士学位论文,2015.
[17]黄小东.藏南拆离系江孜-隆子金-锑成矿带成矿规律与找矿方向研究[D].成都理工大学硕士学位论文,2011.
[18]张刚阳.藏南金锑多金属成矿带成矿模式与找矿前景研究[D].中国地质大学(武汉)博士学位论文,2012.
[19]杨良哲,任刚,齐利平,等.东天山白石泉一带铜镍矿成矿模式及找矿模型[J].新疆地质,2011,29(4):428-432.
[20]刘长纯,杨仲杰,王成龙,等.辽宁肖家营子钼多金属矿成矿模式与找矿模型[J].世界地质,2012,31(2):238-246.
[21]蒋成兴,卢映祥,陈永清,等.滇西南芦子园超大型铅锌多金属矿床成矿模式与综合找矿模型[J].地质通报,2013,32(11):1832-1844.
[22]王瑞廷,谭兴华,李福让,等.石泉县羊坪湾金矿床成矿模式及其找矿模型[J].西北地质,2013,46(2):93-98.
[23]赵志新,杨宝荣,陈冬,等.西天山哈尔嘎嘎林恩铜金矿床地质特征及综合找矿模型[J].地质科技情报,2015,34(4):84-91.
[24]任军平,许康康,相振群,等.南非维特沃特斯兰德盆地绍斯迪普金矿床地质特征、成矿模式和找矿模型[J].地质通报,2015,34(6):1217-1226.
(1)武警黄金第十一支队.西藏哲古—日当一带铅锌锑多金属矿远景调查评价报告. 2017.
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