陕西省略阳县跌马岩金矿成矿地质条件浅析
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摘要
矿区位于勉略构造带内邓家山背斜北翼,位于乔子沟火山岩中,历经多期次复杂的构造活动,受构造作用影响强烈,韧性剪切带发育,岩石普遍发生不同程度的变质变形,蚀变较强,圈出的蚀变带最宽达165 m。其蚀变类型主要为硅化、褐铁矿化、黄铁矿化、铁碳酸盐化,次为绢云母化、绿泥石化。其中铁碳酸岩化、黄铁矿化与金矿化关系最为密切。矿化体主要赋存于古中元古界乔子沟火山岩(qlv),其岩性为绿泥绢云钠长片岩。片粒状变晶结构,片状构造。该岩石处于构造带,受构造作用影响强烈。岩石中多见不同程度的褐铁矿化。
The mining area is located in the north wing of the Dengjiashan anticline in the Weiluo structural belt. It is located in the volcanic rocks of Qiaozigou. It has undergone many complicated tectonic activities and is strongly influenced by tectonic action. The ductile shear zone develops and the rocks generally occur to varying degrees. Metamorphic deformation, strong alteration, circled alteration zone up to 165 m. The types of alteration are mainly silicification, limonite mineralization, pyrite mineralization, iron carbonation, followed by sericitization and chlorite. Among them, iron carbonate lithification, pyrite mineralization and gold mineralization are the most closely related. The mineralized body mainly exists in the Qiaozigou volcanic rock(qlv) in the Paleo-Earth and Paleozoic, and its lithology is the green mud, yunnan sodium long schist. Granular crystal structure, sheet structure. The rock is in the tectonic zone and is strongly influenced by the tectonic action. Different degrees of limonite mineralization are common in rocks.
The mining area is located in the north wing of the Dengjiashan anticline in the Weiluo structural belt. It is located in the volcanic rocks of Qiaozigou. It has undergone many complicated tectonic activities and is strongly influenced by tectonic action. The ductile shear zone develops and the rocks generally occur to varying degrees. Metamorphic deformation, strong alteration, circled alteration zone up to 165 m. The types of alteration are mainly silicification, limonite mineralization, pyrite mineralization, iron carbonation, followed by sericitization and chlorite. Among them, iron carbonate lithification, pyrite mineralization and gold mineralization are the most closely related. The mineralized body mainly exists in the Qiaozigou volcanic rock(qlv) in the Paleo-Earth and Paleozoic, and its lithology is the green mud, yunnan sodium long schist. Granular crystal structure, sheet structure. The rock is in the tectonic zone and is strongly influenced by the tectonic action. Different degrees of limonite mineralization are common in rocks.
引文
[1]《固体矿产地质勘查规范总则》(国标,GB/T13908-2002).
[2]《稀有金属矿产地质勘查规范》(行标,DZ/T0203-2002).
[3]卢作祥,范永香.成矿规律与成矿预测学.中国地质大学出版社,1989.
[4]刘石年.成矿预测学.长沙:中南工业大学出版社,1993.
[5]邵振国.地质普查找矿新探索.河北省地质矿产勘查院,1994.
[6]叶天竺.固体矿产预测评价方法技术.中国大地出版社,2004.
[2]《稀有金属矿产地质勘查规范》(行标,DZ/T0203-2002).
[3]卢作祥,范永香.成矿规律与成矿预测学.中国地质大学出版社,1989.
[4]刘石年.成矿预测学.长沙:中南工业大学出版社,1993.
[5]邵振国.地质普查找矿新探索.河北省地质矿产勘查院,1994.
[6]叶天竺.固体矿产预测评价方法技术.中国大地出版社,2004.