| 铜官山地区矽卡岩型铜金矿床稀土元素特征及其成因意义 |
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| 引用本文： | 邱瑞龙,杨义忠.铜官山地区矽卡岩型铜金矿床稀土元素特征及其成因意义[J].地球化学,1994(4). |
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| 作者姓名： | 邱瑞龙 杨义忠 |
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| 作者单位： | 安徽省地质科学研究所 |
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| 基金项目： | “七五”国家科技攻关项目 |
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| 摘 要： | 铜官山地区不同成因类型的矽卡岩发育，各自对应着不同成因类型的铜金矿床，且具有不同的稀土元素分布模式及演化特征，提供了矽卡岩矿床多成因的信息。
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| 关 键 词： | 矽卡岩，铜金矿床，稀土元素特征，矿床成因论，安徽 |
REE CHARACTERISTICS AND GENETIC SIGNIFICANCE OF SKARN-TYPE COPPER-GOLD ORE DEPOSITS IN TONGGUANSHAN REQION |
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| Qiu Ruilong, Yang Yizhong.REE CHARACTERISTICS AND GENETIC SIGNIFICANCE OF SKARN-TYPE COPPER-GOLD ORE DEPOSITS IN TONGGUANSHAN REQION[J].Geochimica,1994(4). |
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| Authors: | Qiu Ruilong Yang Yizhong |
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| Abstract: | Skarn-type copper-gold ore deposits in the Tongguanshan region may be divided into four types based on their genesis, with each having its own characteristic chondrite-normalized REE pattern of igneous rocks, skarn and sulfide ore. The first type is an injection skarn-sulfide liquation deposit. Its igneous rocks have a similar chonderite-normalized REE pattern to the alkali-rich injection skarn,and La and Ce are obviously depleted in alkali-poor sulfide ores.The second type is an injection skarn-mesothermal sulfide deposit, with the chonderite-normalized REE pattern of the injection skarn similar to that of igneous rocks. The sulfide ores are characterized by apperently positive Eu anomaly and strong differentiation between LREE and HREE, indicating that the mineralizing solution may be the residual from the crystallization differentiation of the skarn melt (fluid). The third one is a hypothermal sulfide deposit superimposing in the injected-metasomatic skarn. The chondrite-normalized REE pattern for the sulfide ores approximates to those of igneous rocks,and is characterized by the deficiency of LREE and apparently negative Eu anomaly, indicating that the mineralizing solution may be the product of crystallization differentiation from a residual magma at the late stage. The last one is a metasornatic skarn-type deposit. The chondrite-normalized REE pattern for the sulfide ores is similar to that of the mesothermal deposit with obvious deficiency of La and Ce. |
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| Keywords: | skarn copper-gold deposit REE metallogeny Anhui Province |
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