陕西省山阳县夏家店金(钒)矿地质特征、成矿模式与找矿预测
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摘要
夏家店金矿床处于区域性山阳-凤镇、镇安-板岩镇深大断裂交汇复合构造较为复杂且强烈的特殊位置,含矿岩系为寒武系水沟口组薄互层重晶石-碳-泥-硅质板岩、泥质岩、硅质岩,容矿构造为脆-韧性断裂,属于与黑色岩系有关的金矿床。经多年勘查,矿床控制金、钒资源量均达中型规模。矿石类型可分为板岩角砾岩型、硅质角砾岩型、白云岩角砾岩型和混合角砾岩型4种类型。笔者详细介绍了主要矿体的地质和矿化特征,在总结矿床地质、地球化学、流体包裹体和同位素特征的基础上,进一步建立了成矿模式和找矿标志,并指出了苏岭沟和Ⅶ号矿化带倒转背斜槽部是进一步找矿工作的重点地段。
Xiajiadian gold deposit is located in a special complex intersection between ShanyangFengzhen fault and Zhen'an-Banyanzhen fault.The ore-bearing rocks are thin interbed barite-carbonaceous-argillaceous-siliceous slate,argillaceous rock and siliceous rock of Cambrian Shuigoukou formation.The ore-bearing tectonic is brittle-ductile fault related to the black rock series.Based on years of exploration,the quantity of gold and vanadium resources both reach a medium scale.Ore types can be divided into:slate-breccia type,siliceous breccia type,dolomitic breccia type and combined breccia types.In this paper,we introduce in details the geological and miner-alization characteristics of the main ore bodies.Based on summarizing the characteristics of deposit geology,geochemistry,fluid inclusion and isotope,the metallogenic model and prospecting marks are established in further.Sulinggou and the reversal anticline slot part ofⅦ mineralized belt are the key sections for exploration work in the future.
Xiajiadian gold deposit is located in a special complex intersection between ShanyangFengzhen fault and Zhen'an-Banyanzhen fault.The ore-bearing rocks are thin interbed barite-carbonaceous-argillaceous-siliceous slate,argillaceous rock and siliceous rock of Cambrian Shuigoukou formation.The ore-bearing tectonic is brittle-ductile fault related to the black rock series.Based on years of exploration,the quantity of gold and vanadium resources both reach a medium scale.Ore types can be divided into:slate-breccia type,siliceous breccia type,dolomitic breccia type and combined breccia types.In this paper,we introduce in details the geological and miner-alization characteristics of the main ore bodies.Based on summarizing the characteristics of deposit geology,geochemistry,fluid inclusion and isotope,the metallogenic model and prospecting marks are established in further.Sulinggou and the reversal anticline slot part ofⅦ mineralized belt are the key sections for exploration work in the future.
引文
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张国伟,张本仁,袁学诚,等.秦岭造山带与大陆动力学[M].科学出版社,北京,2001.ZHANG Guowei,ZHANG Benren,YUAN Xuecheng,et al.Qinling orogenic belt and continental dynamics[M].Science Press,Beijing,2001.
朱华平,任涛,李建斌,等.陕西山阳县夏家店金矿床地质特征、空矿因素与金的富集规律[J].地质通报,2004,23(7):695-701.ZHU Huaping,REN Tao,LI Jianbin,et al.Geological characteristics,ore-controlling factors and gold enrichment regularity of the Xiajiadian gold deposit,Shanyang county,Shaanxi province[J].Geological Bulletin of China,2004,23(7):695-701.
刘军威.陕西夏家店金钒矿床特征与控矿因素分析[J].西北地质,2011,44(2):17-20.LIU Junwei.Ore body characteristics and the controlling factors of Shaanxi Xiajiadian gold-vanadium ore region[J].Northwestern Geology,2011,44(2):17-20.
任涛.陕西山阳夏家店金(钒)矿床地质特征及找矿前景分析[J].西北金属矿产地质,2001,(26-27):82-85.REN Tao.Geological characteristics and ore prospecting potential of the Xiajiadian gold deposit,Shanyang county,Shannxi province[J].Geology of Metal Mineral Resources of Northwestern China,2001,(26-27):82-85.
任涛,樊忠平,原莲肖,等.南秦岭东段早寒武世黑色岩系金钒成矿特征与找矿方向-以夏家店矿床为例[J].西北地质,2007,40(2):85-94.REN Tao,FAN Zhongping,Yuan Lianxiao,et al.Metallogenic characteristics and prospecting target of Au-V deposits in early Cambrian black rock series in the eastern south Qinling:a case study of the Xiajiadian deposit[J].North Western Geology,2007,40(2):85-94.
任涛,王瑞廷,孟德明,等.南秦岭造山型金矿地质特征及成矿模式-以陕西山阳夏家店金(钒)矿床为例[J].西北地质,2014,47(1):150-158.REN Tao,WANG Ruiting,MENG Deming,et al.Geological characteristics and metallogenic model of the orogenic-type gold deposit in south Qinling:a case of Xiajiadian gold(vanadium)deposit,Shanyang county,Shannxi province[J].Northwestern Geology,2014,47(1):150-158.
王瑞廷,王东生,代军治,等.秦岭造山带陕西段-主要矿集区铅锌银铜金矿综合勘查技术研究[M].北京:地质出版社,2012WANG Ruiting,WANG Dongsheng,DAI Junzhi,et al.Study on synthetical exploration technology for Pb-ZnAg-Cu-Au deposits in major mineralization concentrated region of Shaanxi area in Qinling orogenic belt[M].Beijing:Geological Press,2012.
王伟涛,肖丽,周铁锁,等.南秦岭夏家店卡林型金矿床构造特征与成矿关系[J].西北地质,2011,37(3):61-66.WANG Weitao,XIAO Li,ZHOU Tiesuo,et al.Tectonic and mineralization of Xiajiadian carlin-type gold deposit in South Qinling Shaanxi[J].Northwestern Geology,2011,37(3):61-66.
原莲肖,任涛,李英,等.陕西山阳县夏家店金矿物质组分和成矿流体特征及成矿物质来源探讨[J].地质与勘探,2007,43(5):68-73.YUAN Lianxiao,REN Tao,LI Ying,et al.Component,ore-forming fluids and material sources in the Xiajiadian gold deposit of Shanyang county,Shaanxi[J].Geology and Prospecting,2007,43(5):68-73.
张复新,侯俊富,张存旺,等.甘肃阳山超大型卡林-类卡林型复合式金矿床特征[J].中国地质,2007,34(6):1062-1072.ZHANG Fuxin,HOU Junfu,ZHANG Cunwang,et al.Characteristics of the superlarge Yangshan carlin and carlin-like compound type gold deposit in Gansu[J].Geology in China,2007,34(6):1062-1072.
张国伟,张本仁,袁学诚,等.秦岭造山带与大陆动力学[M].科学出版社,北京,2001.ZHANG Guowei,ZHANG Benren,YUAN Xuecheng,et al.Qinling orogenic belt and continental dynamics[M].Science Press,Beijing,2001.
朱华平,任涛,李建斌,等.陕西山阳县夏家店金矿床地质特征、空矿因素与金的富集规律[J].地质通报,2004,23(7):695-701.ZHU Huaping,REN Tao,LI Jianbin,et al.Geological characteristics,ore-controlling factors and gold enrichment regularity of the Xiajiadian gold deposit,Shanyang county,Shaanxi province[J].Geological Bulletin of China,2004,23(7):695-701.