| 云南北衙金矿煌斑岩地质特征及找矿意义 |
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| 引用本文： | 刘建云.云南北衙金矿煌斑岩地质特征及找矿意义[J].黄金地质,2004,10(1):20-23. |
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| 作者姓名： | 刘建云 |
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| 作者单位： | 云南地矿资源公司,北衙分公司,云南,鹤庆,617507 |
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| 摘 要： | 北衙金矿区广泛发育煌斑岩脉，规模较大的主要有7条，呈近EW向分布。形态较复杂，分支复合、膨胀收缩现象明显，并具有等距性分布的特点。厚度变化大，常交切矿体(脉)，为成矿期脉岩。区内金矿体的产出主要与斑岩体及煌斑岩脉有关，与煌斑岩脉具有平行、包容和交切3种情况，以交切关系为主；在成因上煌斑岩为金矿成矿提供了部分成矿物质、热能及富集场所。煌斑岩不仅控制了矿区工业矿体的总体分布，而且控制了金矿体的产状及规模，是重要的找矿标志。
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| 关 键 词： | 金矿 煌斑岩 地质特征 找矿意义 云南 |
| 文章编号： | 1006-558X(2004)01-0020-04 |
| 修稿时间： | 2004年1月5日 |
Geological characteristics of lamprophyre and its prospecting significance of the Beiya gold deposit,Yunnan |
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| LIU Jian-yun.Geological characteristics of lamprophyre and its prospecting significance of the Beiya gold deposit,Yunnan[J].Gold Geology,2004,10(1):20-23. |
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| Authors: | LIU Jian-yun |
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| Abstract: | Lamprophyric veins spread widely in the Beiya gold mining area,among them the seven large-size veins are EW-trending.The form of lamprophyric veins is more complicated,branching,compound,dilation and contraction clearly.The veins distribute equidistantly,vary in the widths and commonly insect ore veins,indicating that they formed during the metallogenic period.The orebodies are mainly related to porphyry and lamprophyric veins.The spatial relationship between the lamprophyric veins and orebodies includes following three scenarios: parallel,containment and intersection,the last is the main.Lamprophyre in mining area provide ore-forming material,thermal energy and space,showing the genetic relationship between the lamprophyre and the deposit obviously.The lamprophyre in the mining area control not only the overall distribution of the industrial orebodies but also their occurrences and scales,and it is an important prospecting criterion. |
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| Keywords: | gold deposit lamprophyre significance of prospecting Yunnan |
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