| 前寒武纪绿岩地体中金丰度与金成矿的关系 |
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| 引用本文： | 王晓勇.前寒武纪绿岩地体中金丰度与金成矿的关系[J].地质与资源,2001,10(4):244-247. |
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| 作者姓名： | 王晓勇 |
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| 作者单位： | 武警黄金第六支队, 黑龙江 哈尔滨 150049 |
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| 摘 要： | 许多研究者认为,金丰度高的花岗岩和地层就是金矿床的矿源岩和矿源层.随着中子活化法和化学-光谱法的广泛应用,分析精度有了大幅度提高(可达0.01×10-9).大量的国内外资料表明:绿岩地体中变质岩的金丰度较低,平均为0.71×10-9~2.40×10-9,与金矿有关的花岗岩金丰度更低,平均只有0.62×10-9~1.20×10-9.因此,矿源岩和矿源层并不是人们所想像的那些特定的岩石或地层.所有岩石都可能成为矿源岩或矿源层.花岗岩和地层中金的丰度与金矿床之间不存在必然的联系,金成矿与使金活化、迁移和富集的各种成矿机理有关.
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| 关 键 词： | 绿岩地体 金丰度 矿源层 成矿机理 |
| 文章编号： | 1671-1947(2001)04-0244-04 |
| 收稿时间： | 2001-09-03 |
| 修稿时间： | 2001年9月3日 |
RELATIONSHIP BETWEEN THE ABUNDANCE AND METALLOGENESIS OF GOLD IN PRECAMBRIAN TERRAINS |
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| WANG Xiao-yong.RELATIONSHIP BETWEEN THE ABUNDANCE AND METALLOGENESIS OF GOLD IN PRECAMBRIAN TERRAINS[J].Geology and Resources,2001,10(4):244-247. |
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| Authors: | WANG Xiao-yong |
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| Institution: | No. 6 Gold Geological Party of the Armed Police, PLA, Harbin 150049, China |
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| Abstract: | The granite and strata with high Au abundance have been considered to the source of gold by many geologists.With broad application of the method of neutron activation and chemical-spectral analysis,the accuracy of analysis has greatly improved(up to 0.01×10 -9).A wealth of data shows that the Au abundance of metamorphic rocks in greenstone terrains is rather low(0.17×10 -9 to 2.40×10 -9 in average),and in the relevant granites is only 0.62×10 -9 to 1.20×10 -9 averagely.This concludes that the concept of source rocks or source beds is ambiguous and non-specific.All rocks are possible to perform as source rocks/beds.The mineralization of gold is not related to the Au abundance in granite and strata,but to the metallogenetic mechanism involving gold activation,migration and enrichment. |
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| Keywords: | greenstone gold abundance source bed metallogenetic mechanism |
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