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早子沟金矿岩石地球化学特征及其地质意义
引用本文:陈国忠,梁志录,王建龙,麻红顺.早子沟金矿岩石地球化学特征及其地质意义[J].甘肃地质学报,2012(4):23-31.
作者姓名:陈国忠  梁志录  王建龙  麻红顺
作者单位:甘肃省地矿局第三地勘院,甘肃 兰州 730050,甘肃省地矿局第三地勘院,甘肃 兰州 730050,甘肃省地矿局第三地勘院,甘肃 兰州 730050,甘肃省地矿局第三地勘院,甘肃 兰州 730050
摘    要:早子沟金矿位于西秦岭造山带北缘,近年来随着勘查程度的加强,矿区资源储量增加明显,已达特大型规模。本文通过对矿区岩石的地球化学特征的分析研究,揭示矿区岩浆岩的具有喜马拉雅型花岗岩的特性,并就其产出的构造环境及其与金成矿的关系做了进一步阐述,认为矿区Au元素来源于增厚下地壳物质与喜马拉雅型花岗岩关系密切,岩浆热液—构造—围岩的耦合富集作用是形成矿区金矿床工业堆积的主要原因。

关 键 词:岩石地球化学特征  喜马拉雅型花岗岩  耦合富集  早子沟金矿

Geochemical Characteristics of Zaozigou Gold Deposit and its Significance
CHEN Guo-zhong,LIANG Zhi-lu,WANG Jian-long and MA Hong-shun.Geochemical Characteristics of Zaozigou Gold Deposit and its Significance[J].Acta Geologica Gansu,2012(4):23-31.
Authors:CHEN Guo-zhong  LIANG Zhi-lu  WANG Jian-long and MA Hong-shun
Abstract:Zaozigou gold mine is located in the northern margin of the West Qinling orogenic belt, and its reserve has reached the super-large scale with the exploration during recent years. The geochemical characteristics of rock in mine revealed that the mine magmatic rock has the characteristics of the Himalayan granite. The paper analyzed the relation between the environment of magmatic rock and gold metallogenesis, and supposed that the source of gold was the crustal material under the thickening mechanism related to Himalayan granite. The coupled enrichment of magmatic hydrothermal solution-structures-country rock should be the main factor to develop the accumulation of gold deposit.
Keywords:geochemical characteristics  Himalayan granite  coupled enrichment  Zaozigou gold deposit
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