| 岩帽:地质特征及找矿意义 |
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| 引用本文： | 徐庆生.岩帽:地质特征及找矿意义[J].地质与勘探,2010,46(1):20-23. |
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| 作者姓名： | 徐庆生 |
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| 作者单位： | 中国冶金地质总局矿产资源研究院,北京,100025 |
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| 摘 要： | 岩帽是指富硅的、经受了高级泥化和泥化蚀变的斑岩型热液活动/蚀变体系的顶部,在地质环境上位于古地表和浅成中-酸性岩浆侵入体之间,在现今地貌上常表现为突起的块体或山丘,在野外具有醒目、突出的地形特征。许多岩帽构成了斑岩型热液-成矿活动/蚀变体系的重要组成部分,是重要的找矿指示标志,具有很大的勘探潜力,特别是产出于中、新生代岛弧环境中的岩帽,很可能与高或低硫化浅成低温热液型矿床、斑岩型铜/金矿床和次生铜富集带有紧密成因联系。在勘探工作的早期阶段,特别是在初级勘查区内进行贵金属和有色金属勘查时,要特别重视岩帽的识别。
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| 关 键 词： | 岩帽 高级泥化/泥化 班岩型铜-金矿 浅成低温热液型金-银矿 |
| 收稿时间： | 2009/9/10 0:00:00 |
| 修稿时间： | 2009/11/12 0:00:00 |
Lithocaps: Geological Characteristics and Implication to Exploration of
Epithermal and Porphyry-Style Deposits |
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| XU Qing-sheng.Lithocaps: Geological Characteristics and Implication to Exploration of
Epithermal and Porphyry-Style Deposits[J].Geology and Prospecting,2010,46(1):20-23. |
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| Authors: | XU Qing-sheng |
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| Institution: | Institute of Mineral Resources Research;CMGB;Beijing 100025 |
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| Abstract: | Lithocaps are the advanced argillic and argillic altered,silica-rich tops to porphyry systems that are located between the subvolcanic intrusives and the paleosurface.Lithocaps usually form large,topographically prominent masses because they are resistant to weathering and erosion.They can be zoned from surface with vuggy silica at the top(silica cap),then with depth,quartz-alunite-(enargite),quartz-pyrophyllite-diaspore,quartz-illite-kaolinite,quartz-sericite.Lithocaps have great exploration potential for ... |
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| Keywords: | lithocap porphyry Cu-Au epithermal Au-Ag exploration |
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