| 东坪金矿床的围岩蚀变和流体特征 |
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| 引用本文： | 孙丽娜,王建国.东坪金矿床的围岩蚀变和流体特征[J].地质与资源,1995,4(4):255-262. |
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| 作者姓名： | 孙丽娜 王建国 |
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| 作者单位： | 沈阳黄金学院 |
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| 摘 要： | 东坪金矿床围岩蚀变特征、流体包裹体特征与氢氧同位素特征研究表明,成矿流体富集K+、Na+、Au+、Cl-和CO2、H2S,成矿溶液以岩浆热液为主,但有天水的混合。金在溶液中以Au(HS)2-和AuCl2-形式存在,构造活动引起的压力突变和流岩反应是引起金沉淀的主要因素。围岩蚀变以钾化为主,其次是硫化、钠化和硅化、碳酸盐化。金矿化与K/Al值呈反相关,与Na/Al值和S/Fe呈正相关。K/Al值的最高点与Na/Al值的最低点的对应关系可以用于圈定矿体。
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| 关 键 词： | 围岩蚀变 流体特征 金矿床 |
CHARACTERISTIC OF FLUID AND COUNTRY ROCKS ON DONGPING GOLD DEPOSIT |
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| Sun Lina,Wang Jianguo.CHARACTERISTIC OF FLUID AND COUNTRY ROCKS ON DONGPING GOLD DEPOSIT[J].Geology and Resources,1995,4(4):255-262. |
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| Authors: | Sun Lina Wang Jianguo |
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| Institution: | Shengyang Clooege of Gold Technology |
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| Abstract: | The stccdy of characterestic of country rock alteration，fluid inclusion and Hydro-Oxygen isotope composition in Dongping gold deposit indicatcd ore-formnig fluid rich ink~+, Na~+, Au~+, Cl~-，CO_2 amd H_2S, ore－forming fluid prlncipally is magmatic origin，mixedatmospheric water. Gold exist in the form of Au（HS） and AuCl in the one－forming fluidand precipitate due to decline of fluid pressure abruptly and reaction between fluid and coun- try rocks． Type of wall－rock alteration is prlncipally potassium feldsparization，silicifica-tion ,pyritization and carbonization correlation analysiy showed positive correlation betweengold and Na／Al and S／Fe velue and nagaotive between Au and K／Al value. Corresponding ofmaximum of K／Al and minmum of Na／Al may use as a indcx of delineation one－body. |
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| Keywords: | wall－rook alteration fluid feature gold deposit |
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