河北省石湖金矿矿床地质特征及控矿因素分析
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摘要
石湖金矿地处河北省石家庄市灵寿县,是河北省大型金矿之一。矿区位于北冶-麻棚-杨家庄断裂带、麻棚岩体外接触带上,受区域构造及麻棚岩体影响,成矿条件优越。
在区域成矿地质背景及矿床地质特征研究的基础上,着重研究地层、构造、岩浆岩与成矿的关系;阐述了矿田构造的性质及其演化;分析了成矿物质来源及成矿流体来源;提出矿床成因新观点;建立了石湖金矿成矿模式;总结了成矿规律。
研究认为;
1、石湖金矿经历前地槽、地台、地洼三个大的构造发展演化阶段。
2、矿床的形成与赋矿地层、岩浆岩、断裂破碎带等因素密切相关。
3、成矿物质主要来源于矿体周边地层阜平群团泊口组。
4、成矿流体主要是岩浆热液和地层流体(或天然雨水)的混合流体。
5、石湖金矿床的类型为具有多因素控制、多矿质来源、多矿化阶段、以岩浆热液为主导的多因复成改造型金矿。
Lying in Lingshou county,Shijiazhuang City,Hebei province, Shihu gold deposits is a large-scale one in this area, which is located in the contact zone of Beiye-Mapeng-Yangjiazhuang fracture and Mapeng rock mass, and controlled by the regional structures and Mapeng rock mass. Thus, there exist useful ore-forming conditions.
Through the researches of regional mineralization geology background and deposit geological features ,the author emphatically studies the relations between mineralization and strata, structures or magamatites, explains the evolutional properties of the ore fields and structures, analyzes the origin of the ore-forming matters and fluids, presents the new origin viewpoints of the deposits, sets up the metallogenic model of the gold deposits, and summarizes the mineralization enrichmental regulations.
On the basis of the above-mentioned studies, the following conclusions are drawn.
(1)Shihu mining area has undergone three larger evolutional stages,that is Pregeosyncline, Platfoum and Diwa.
(2)The origin of gold deposits in Shihu ore field is mainly controlled by the factors of strata, magamatites as well as structures.
(3)The origin of the metallogenic matters comes from the
Tuanbokou formation.
(4)The origin of ore-forming fluids comes from the mixtures of the magmatic hydrothermal and stratigraphic or atmospheric fluids.
(5)The type of Shihu gold ore deposits belongs to a polygenetic compound ore deposit, which is mainly controlled by the magmatic hydrothermal fluids and characterized by the multi-factors, the multi-origins and the multi-stages.
在区域成矿地质背景及矿床地质特征研究的基础上,着重研究地层、构造、岩浆岩与成矿的关系;阐述了矿田构造的性质及其演化;分析了成矿物质来源及成矿流体来源;提出矿床成因新观点;建立了石湖金矿成矿模式;总结了成矿规律。
研究认为;
1、石湖金矿经历前地槽、地台、地洼三个大的构造发展演化阶段。
2、矿床的形成与赋矿地层、岩浆岩、断裂破碎带等因素密切相关。
3、成矿物质主要来源于矿体周边地层阜平群团泊口组。
4、成矿流体主要是岩浆热液和地层流体(或天然雨水)的混合流体。
5、石湖金矿床的类型为具有多因素控制、多矿质来源、多矿化阶段、以岩浆热液为主导的多因复成改造型金矿。
Lying in Lingshou county,Shijiazhuang City,Hebei province, Shihu gold deposits is a large-scale one in this area, which is located in the contact zone of Beiye-Mapeng-Yangjiazhuang fracture and Mapeng rock mass, and controlled by the regional structures and Mapeng rock mass. Thus, there exist useful ore-forming conditions.
Through the researches of regional mineralization geology background and deposit geological features ,the author emphatically studies the relations between mineralization and strata, structures or magamatites, explains the evolutional properties of the ore fields and structures, analyzes the origin of the ore-forming matters and fluids, presents the new origin viewpoints of the deposits, sets up the metallogenic model of the gold deposits, and summarizes the mineralization enrichmental regulations.
On the basis of the above-mentioned studies, the following conclusions are drawn.
(1)Shihu mining area has undergone three larger evolutional stages,that is Pregeosyncline, Platfoum and Diwa.
(2)The origin of gold deposits in Shihu ore field is mainly controlled by the factors of strata, magamatites as well as structures.
(3)The origin of the metallogenic matters comes from the
Tuanbokou formation.
(4)The origin of ore-forming fluids comes from the mixtures of the magmatic hydrothermal and stratigraphic or atmospheric fluids.
(5)The type of Shihu gold ore deposits belongs to a polygenetic compound ore deposit, which is mainly controlled by the magmatic hydrothermal fluids and characterized by the multi-factors, the multi-origins and the multi-stages.
引文
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[28]石准立,刘凤山,北太行山-燕山区中生代金属矿床成矿系统地学前沿,1999,6(2):297-303
[29]邓晋福,苏尚国,刘翠.北太行山-燕山-辽西地区燕山期(J-K)造山过程与成矿作用,现代地质,2007,21(2):232-240
[30]王启超,马俊良,张建中.河北省灵寿平接壤地带麻棚金矿田的地球化学特征及矿床成因,地球化学,1995,24(1):56-67.
[31]刘光鼎,郝天珧.中国地质环境与隐伏矿床.地球物理学报,1998,41(2):183-188.
[32]徐杰,高战武,宋长青等.太行山山前断裂带的构造特征,地震地质,2000,22:(2)111-121
[33]刘占坡,高祥林,黎益仕,太行山重力梯级带的密度结构及其地质解释,地震地质,2003,25(2):267-272.
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