| 黑龙江争光金矿床隐爆角砾岩特征及其地质意义 |
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| 引用本文： | 高荣臻.黑龙江争光金矿床隐爆角砾岩特征及其地质意义[J].地质与勘探,2014,50(5):874-883. |
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| 作者姓名： | 高荣臻 |
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| 作者单位： | 中国地质大学（武汉）资源学院，湖北武汉； 中国地质大学成矿过程与矿产资源国家重点实验室, 湖北武汉； 中国地质大学（武汉）地质调查研究院，湖北武汉 |
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| 基金项目： | 内蒙古自治区莫旗拉抛等8幅1:5万区域矿产地质调查资助项目（NMKD2010-3）资助 |
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| 摘 要： | 黑龙江争光金矿床位于大兴安岭东北缘的多宝山矿集区，矿体主要呈脉状产于燕山期闪长岩体与中奥陶统多宝山组的内外接触带上，受断裂构造控制明显。在野外地质调查过程中，发现了3个隐爆角砾岩体（J-1、J-2、J-3），角砾岩体从中心向外侧有较显著的岩石类型分带，中心为热液隐爆角砾岩，向外角砾增大，逐渐过渡为震碎角砾岩。根据胶结物的不同和穿插关系可将其分为四期，最早期为硅质胶结，中期为绿泥石胶结，其次为矿质胶结，最后为灰黑色安山质胶结，其中第二期和第三期隐爆作用与矿化关系密切。通过对隐爆角砾岩地质特征的研究，结果表明在Ⅱ号矿带绿泥石胶结隐爆角砾岩体深部具有寻找与矿质胶结隐爆角砾岩有关金铜矿化体的潜力，这对争光金矿床深部及外围找矿具有一定的指导意义。
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| 关 键 词： | 争光金矿床 隐爆角砾岩 地质特征 多宝山矿集区 |
| 收稿时间： | 2014/2/20 0:00:00 |
| 修稿时间： | 2014/5/30 0:00:00 |
Characteristics of cryptoexplosive breccias in the Zhengguang gold deposit of Heilongjiang Province and their geological implications |
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| Gao Rong-zhen.Characteristics of cryptoexplosive breccias in the Zhengguang gold deposit of Heilongjiang Province and their geological implications[J].Geology and Prospecting,2014,50(5):874-883. |
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| Authors: | Gao Rong-zhen |
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| Institution: | Faculty of Earth Resource, China University of Geosciences, Wuhan, Hubei; State Key Laboratory of Geological Processes and Mineral Resource, China University of Geosciences, Wuhan, Hubei; Geological Survey Institute,China University of Geosciences, Wuhan, Hubei |
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| Abstract: | The Zhengguang gold deposit of Heilongjiang Province is located in the Duobaoshan metallogenic belt northeast of Da Hinggan Mountains. The ore veins occur in the contact zone between the Yanshanian diorite pluton and middle Ordovician Duobaoshan Fm., and show a clear control by faults. Field investigations suggest three cryptoexplosive breccia bodies (No. J-1, J-2 and J-3), and these breccias are zoned from the central hydrothermal cryptoexplosion breccia to broader envelop of larger breccias, and to still broader envelop of shatter breccias. Based on different cements and interspersed relationships, the breccias can be divided into four stages: the early siliceous cementation, later chlorite cementation, then mineral cementation, and final dark gray andesitic cementation. The second and third phase is closely associated with mineralization. Through the study of geological characteristics of cryptoexplosive breccia body, it is suggested that there is great potential for prospecting mineral cementation cryptoexplosive breccia body related to the gold mineralization in the No. II ore belt below the chlorite cementation cryptoexplosive breccia. This study will provide guidance and reference for the deep and periphery prospecting in the Zhengguang gold deposit. |
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| Keywords: | Zhengguang gold deposit cryptoexplosive breccia geological characteristics Duobaoshan metallogenic belt |
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