| 郑松森.豫西前河金矿床控矿因素及深部找矿远景分析[J].地质与勘探,2011,47(2):204-208 |
| 豫西前河金矿床控矿因素及深部找矿远景分析 |
| Ore-Control Factors and Prospect of Ore Search toward Depth in theQianhe Gold Deposit in Western Henan Province |
| 投稿时间：2010-06-11 修订日期：2010-09-06 |
| DOI： |
| 中文关键词: 金矿床 控矿因素 深部找矿 豫西前河 |
| 英文关键词: gold deposit, ore-control factors, ore search toward depth, Qianhe in western Henan Province |
| 基金项目:本文受国家自然科学基金(编号:40772066)和中国冶金地质总局“冈底斯东段南部矽卡岩-斑岩Cu-Au-Mo 矿床成矿模式及
成矿条件综合研究冶项目联合资助。 |
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| 中文摘要: |
| [摘要]前河金矿床属构造蚀变岩型矿床,为河南省金矿的主要类型,其成矿物质来源于熊耳群
鸡蛋坪组火山岩及其下伏太华群变质的超铁镁质岩、变基性火山岩。在燕山期断裂构造活动、岩浆活动
及成矿热液作用下,成矿物质在构造的有利部位富集成矿,在构造的转折部位、分支复合部位及构造交
汇部位矿体变厚,品位变高。金矿化与硅化、黄铁矿化、黄铁绢英岩化、钾长石化及铅锌矿化等关系较为
密切,尤其是细粒黄铁绢英岩化蚀变岩金的品位较高。在矿区勘探期间由于受规范及勘探技术的限制,
矿体深部未尖灭,但没有施工深部远景钻孔,对矿体深部延伸特征研究不够。按照热液矿床成矿流体的
产生深度,矿体向深部有较大的延伸空间,资源潜力较大, 具有较好的找矿前景。对该区深部实施勘查
工作,进行矿床远景控制,将会有新的突破。 |
| 英文摘要: |
| Abstract:The Qianhe gold deposit is of structural altered-rock type deposits that dominate the gold mines in Henan Province. Its ore-forming materi鄄
als are originated from the volcanic rocks in Jidanping Formation of the Xiong爷er Group and the underlying metamorphic ultra-mafic rocks and metabasic
volcanic rocks of the Taihua Group. They were accumulated at favorable sites by the effects of fault activity, magmatism and ore-forming hydrothermal
process during the Yanshanian period. The ore body was thickened and its grade became higher at structural transition areas, composite parts of branches
and structural intersections. Gold mineralization is related with silication, pyritization, phyllic mineralization, K-feldspar mineralization, and lead miner鄄
alization. Especially the grade of the gold in fine pyrite phyllic mineralization altered rock is relatively high. The extension of ore bodies toward depth is
not clear during the exploration of mining area due to limitations of the regulations and exploration technology and lack of deep drilling. In theory, accord鄄
ing to the depth where ore-forming fluids are produced in hydrothermal deposits, the ore body should have a great extension downward, implying a large
resource potential and a good prospect of ore search. It is expected that the exploration toward depth and prospect control of the deposit in this area will
lead a new breakthrough. |
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