| 蚀变带元素地球化学成矿预测法——以金龙山微细浸染型金矿为例 |
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| 引用本文： | 赵利青.蚀变带元素地球化学成矿预测法——以金龙山微细浸染型金矿为例[J].物探与化探,1998,22(1):55-60. |
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| 作者姓名： | 赵利青 |
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| 作者单位： | 北京大学地质学系!北京100871 |
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| 基金项目： | 武警黄金指挥部资助项目 |
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| 摘 要： | 金矿化作用常伴随围岩蚀变,且多受断裂控制,反映在地球化学上出现某些元素的异常晕。在已发现一定矿(化)体并掌握一般控矿特征的地区,利用已有工程经科学的组合采样(主要在蚀变带范围内连续检块采样),分析有关指示元素,总结有关的地球化学指标,建立地球化学预测模式(从元素异常特征或线金属量、地球化学指标或元素比值、逐步回归方程估值等三方面),对已知矿(化)体及外围异常进行地球化学评价研究,这就是蚀变带元素地球化学成矿预测法。该方法在秦岭南坡金龙山微细浸染型金矿上应用,有较好的效果。本方法的预测是半定量或定性的,回归分析估值是近似定量的,同时也是有效的,低成本的。
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| 关 键 词： | 元素地球化学 成矿预测 蚀变带 金矿 金龙山 |
| 收稿时间： | 1996-11-01 |
THE GEOCHEMICAL METALLOGENIC PROGNOSIS METHOD IN THE ALTERATION ZONE AS EXEMPLIFIED BY THE JINLONGSHAN MICROFINE DISSEMINATED GOLD DEPOSIT |
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| Zhao Liqing.THE GEOCHEMICAL METALLOGENIC PROGNOSIS METHOD IN THE ALTERATION ZONE AS EXEMPLIFIED BY THE JINLONGSHAN MICROFINE DISSEMINATED GOLD DEPOSIT[J].Geophysical and Geochemical Exploration,1998,22(1):55-60. |
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| Authors: | Zhao Liqing |
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| Institution: | Department of Geology, Peking University, Beijing 100871 |
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| Abstract: | Gold mineralization is usually accompanied by wall rock alteration and in most cases controlled by faults.Geochemically,it finds expression in the existence of anomalies of some elements.In areas where certain number of orebodies have been found and general ore-controlling features recognized,one may collect composite samples scientifically(mainly within the alteration zone),analyse related indicator elements,summarize relevant geochemical indices,and establish a geochemical prognostic model in the light of anomaly characteristics of elements or linear productivity,geochemical indices or ratios of elements,and evaluation by means of stepwise regression equation.In this way,geochemical evaluation can be made for known ore deposits and peripheral anomalies.The method is called geochemical metallogenic prognosis method in the alteration zone. The method proved to be quite satisfactory in its application to the Jinlonghshan microfine disseminated gold deposit on the southern slope of Qinling Mountains.The prognosis is semi-quantitative or qualitative,the values estimated by regression analysis are approximately quantitative and,in addition,the method is effective and of low cost. |
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| Keywords: | element geochemistry metallogenic prognosis alteration zone gold deposit Jinlongshan |
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