| 湘西沃溪钨锑金矿床超纯自然金 |
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| 引用本文： | 彭渤,陈广浩.湘西沃溪钨锑金矿床超纯自然金[J].大地构造与成矿学,2000,24(1):51-56. |
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| 作者姓名： | 彭渤 陈广浩 |
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| 作者单位： | 1. 中国科学院长沙大地构造研究所,湖南,长沙,410013
2. University of Mining and Metallurgy,Cracow,Poland |
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| 基金项目： | 中国科学院创新工程黄金科研项目;; |
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| 摘 要： | 湘西沃溪钨锑金矿床产有自然界中十分罕见的超纯自然金。超纯自然金的Au含量在99 %以上 ,Fisher成色接近1000。自然金中含有Ag、Pb、Zn、Cu、As、Sb、Hg、Bi等显微化学组分。与一般自然金相比 ,超纯自然金的Ag 含量显著偏低 ,而Pb、Zn、As、Sb、Hg、Bi等显微化学组分含量趋于偏高 ,且较稳定。理论分析表明 ,超纯自然金的形成与强氧化性的酸性成矿流体有关。流体中金、银主要以MeCl2-(Me=Au或Ag)的络合物形式迁移。推断矿床成矿可能与区域中酸性岩浆活动有成因联系。
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| 关 键 词： | 超纯自然金 显微化学组分 成因 湘西沃溪 |
SUPER-PURE NATIVE GOLD IN W-Sb-Au ORES FROM THE WOXI DEPOSIT IN WESTERN HUNAN PROVINCE,CHINA |
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| Adam Piestrzynski.SUPER-PURE NATIVE GOLD IN W-Sb-Au ORES FROM THE WOXI DEPOSIT IN WESTERN HUNAN PROVINCE,CHINA[J].Geotectonica et Metallogenia,2000,24(1):51-56. |
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| Authors: | Adam Piestrzynski |
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| Abstract: | The super-pure native gold has been identified out from the W-Sb-Au ores at the Woxi deposit in western Hunan Province,China.Results from microprobe analysis show that the super-pure native gold contains microchemical composition including elements Ag,Pb,Zn,Cu,As,Sb,Hg and Bi,with Au content more than 99 percent and Fisher fineness from 997.7 to 1000.Such kind of super-pure native gold can not be found in nature.Compared to the native gold found in other places,the Ag of the super-purenative gold is extremely low,while the contents of Pb,Zn,As,Sb,Hg and Bi in thesuper-pure native gold are relatively high.Theoretically,a favorable condition for deposition/formation of the super-pure native gold probably is under a strong oxidized acid condition in which gold and silver was transferred in forms of Me Cl2- (Me=Au or Ag).It can be deduced that gold mineralization at the Woxi deposit might be closely related to the magmatic fluids associated with the regional magmatic activities. |
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| Keywords: | Super-pure native gold microchemical composition genesis Woxi Western Hunan China |
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