河南宽坪金矿地质特征及找矿方向
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摘要
崤山地区具备金成矿的地层、构造、岩浆岩三大有利条件。金矿床类型有石英脉型和构造破碎蚀变岩型。宽坪金矿为构造破碎蚀变岩型,含矿构造带具多期次活动的特征,金矿体严格受构造带控制。热液成矿期可划分为3个阶段:(1)早期石英—黄铁矿阶段;(2)中期石英—多金属硫化物阶段;(3)晚期石英—白云母—硫化物阶段。与金矿化关系密切的围岩蚀变为硅化、黄铁绢英岩化、绿泥石化、绢云母化、钾化等。进一步找矿的有利部位为已知矿化蚀变带深部和燕山期岩浆活动强烈的部位。
There are three favorable conditions for gold mineralization in the Xiaoshan district, that is, stratum, structure and magmatic rock. The types of gold deposit are quartz vein type and structure-fractured altered rock type, and the Kuanping gold ore is the latter one. The gold ore body is strictly controlled by structural belt featured by multi-periodic activities. The hydrothermal metallogenic epoch can be divided into three stages:(1) early quartz-pyrite stage;(2) intermediate quartz-polymetallic sulphide stage;(3)late quartz-muscovite-sulfide stage. The wall-rock alteration closely associated with gold mineralization includes silicification, beresitization, chloritization, sericitization, potassic alteration, etc. The favorable places for further prospecting are:( 1) the depth of known mineralized alteration zones;(2) the areas where the Yanshanian activities are intensive.
There are three favorable conditions for gold mineralization in the Xiaoshan district, that is, stratum, structure and magmatic rock. The types of gold deposit are quartz vein type and structure-fractured altered rock type, and the Kuanping gold ore is the latter one. The gold ore body is strictly controlled by structural belt featured by multi-periodic activities. The hydrothermal metallogenic epoch can be divided into three stages:(1) early quartz-pyrite stage;(2) intermediate quartz-polymetallic sulphide stage;(3)late quartz-muscovite-sulfide stage. The wall-rock alteration closely associated with gold mineralization includes silicification, beresitization, chloritization, sericitization, potassic alteration, etc. The favorable places for further prospecting are:( 1) the depth of known mineralized alteration zones;(2) the areas where the Yanshanian activities are intensive.
引文
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刘国华,许令兵,田磊,等.2012.河南祁雨沟隐爆角砾岩筒的侧向隐爆模式探讨[J].矿产勘查,3(1):16-22.
罗铭久,等.1991.河南金矿概论[M].河南省地质矿产厅.
任富根,李维明,李增慧,等.1996.熊耳山-崤山地区金矿成矿地质条件和找矿综合评价模型[M].北京:地质出版社.
李健.2014.河南崤山矿集区金矿成矿类型、成矿规律及找矿方向探讨[J].矿产勘查,5(1):26-31.
田恪强.2015.河南陕县大方山金矿地质特征及找矿标志[J].矿产与地质,29(1):36-40.
宋立强,王春永,宋仲科,等.2015.崤山矿集区金多金属矿成矿模式与成矿预测[J].矿产勘查,6(6):715-724.
滕光亮,龚亮,罗志吉.2012.河南熊耳山地区金矿床的成矿模型浅析[J].西部资源,5:135-137.
王长明,邓军,张寿庭.2006.河南熊耳山地区花山花岗岩与金矿化的关系[J].现代地质,20(2):315-321.
王志光,崔亳,徐孟罗.1997.华北地块南缘地质构造演化与成矿[M].北京:冶金工业出版社.
谢奕汉,范宏瑞.1991.祁雨沟爆破角砾岩型金矿床包裹体特征及其在金矿评价中的应用[J].黄金,12(11):1-4.
徐文超,王通,常云真,等.2016.河南省崤山地区典型金矿床的成矿流体特征及其对进一步找矿的启示[J].矿产与地质,30(1):1-11.
许令兵.2010.河南祁雨沟金矿床成矿作用及找矿预测研究[D].北京:中国地质大学(北京).
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