| 中条山铜矿峪铜矿床蚀变及矿化特征研究 |
| Received:August 18, 2014 Revised:October 10, 2014 点此下载全文 |
| 引用本文：SUN JunGang,LI HongYing,LIU XiaoHuang,XIE KunQi,LI BaoLong,YIN DeWei.2014.Alteration and mineralization characteristics of Tongkuangyu copper deposit in Zhongtiao Mountain, Shanxi Province[J].Mineral Deposits,33(6):1306~1324 |
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| Author Name | Affiliation | E-mail | | SUN JunGang | School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China | | | LI HongYing | MRL Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China | lihongyingy@163.com | | LIU XiaoHuang | No. 7 Gold Geological Party, CAPF, Yantai 264000, Shandong, China | | | XIE KunQi | School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China | | | LI BaoLong | MRL Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China | | | YIN DeWei | Institute of Geophysical and Geochemical Exploration of Shanxi Province, Yuncheng 044004, Shanxi, China | |
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| 基金项目:本文得到中央级公益性科研院所基本科研业务专项资金"山西中条山铜矿峪铜矿矿床地质特征及成因研究(编号: K1408)"和地质调查项目"中国古生代中生代斑岩-矽卡岩型铜矿成矿背景、找矿过程与找矿方向项目(编号: 12120113093600)"的联合资助 |
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| 中文摘要:铜矿峪铜矿床是中条山成矿带的一个大型铜矿床。笔者通过详细的野外观察和系统的岩相学、矿相学工作,对铜矿峪铜矿床的地质、蚀变与矿化进行了详细研究,厘定了主要的围岩蚀变类型及分带特征,并初步探讨了矿化蚀变与成矿作用的关系。研究表明,该矿床早期蚀变为钠硅酸盐化、钾硅酸盐化和青磐岩化,晚期蚀变为长石分解蚀变。空间上,钠硅酸盐化位于岩体内部,钾硅酸盐化位于岩体及其周围地区,青磐岩化位于钾硅酸岩化外侧;钾硅酸盐化叠加于早期的钠硅酸盐化上,后期形成的长石分解蚀变强烈叠加于早期钾硅酸盐化上,位于钾硅酸盐化与青磐岩化之间。铜矿峪斑岩型铜矿床铜矿化应始于钾硅酸盐阶段的晚期,石英硫化物阶段是该矿床最主要的铜矿化阶段,石英碳酸盐阶段次之;另外,碳酸盐阶段也贡献了部分铜。铜矿峪矿体在赋存位置方面与玉龙、德兴、Malanjkhand矿床相似;脉体类型与沙溪、德兴矿床相似;蚀变类型与Tallberg、沙溪矿床基本一致;与Malanjkhand矿床一样都发育特征的钠长石化。 |
| 中文关键词:地质学 围岩蚀变 矿化 成矿阶段 斑岩型铜矿 铜矿峪 中条山 |
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| Alteration and mineralization characteristics of Tongkuangyu copper deposit in Zhongtiao Mountain, Shanxi Province |
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| Abstract:The Tongkuangyu copper deposit is a large porphyry copper deposit in the Zhongtiao metallogenic belt.On the basis of previous work and the detailed field observations and petrographic and mineralogical studies conducted by the authors,geological characteristics, alteration and mineralization of the Tongkuangyu copper deposit were studied in detail. The authors characterized the alteration type and its zoning, and discussed the relationship between alteration and mineralization. Studies have shown that early alteration includes sodium silicate alteration, potassium silicate alteration and propylitization, whereas late alteration is mainly feldspar-decomposition alteration. Spatially,sodium silicate is located inside the porphyry body, potassium silicate rock is located in and around the area of propylitic rocks,propylitization occurs outside of potassium silicate,potassium silicate alteration is superimposed on the earlier sodium silicate alteration,and the late feldspar-destructive alteration is superimposed on the earlier potassium silicate and occurs between potassium silicate and propylitization alteration. The chalcopyrite mineralization of the Tongkuangyu copper deposit began to precipitate at the late stage of the potassium silicate alteration; the stage of quartz-sulfide is the most important stage of mineralization, followed by the quartz carbonate stage; the carbonate stage also contributed some copper to the ore.The Tongkuangyu copper deposit is similar to Yulong, Dexing and Malanjkhand deposits in orebody position, and its alteration types is similar to Tallberg and Shaxi deposits, whereas Tongkuangyu and Malanjkhand are both characterized by sodium silicate alteration. |
| keywords:geology wall rock alteration mineralization ore-forming stage porphyry copper deposit Tongkuangyu Zhongtiao Mountain |
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