| 滇西北白秧坪多金属矿集区东矿带方解石REE地球化学特征及意义 |
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| 引用本文： | 冯彩霞,毕献武,武丽艳,邹志超,唐永永. 滇西北白秧坪多金属矿集区东矿带方解石REE地球化学特征及意义[J]. 吉林大学学报(地球科学版), 2011, 41(5): 1397-1406 |
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| 作者姓名： | 冯彩霞 毕献武 武丽艳 邹志超 唐永永 |
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| 作者单位： | 矿床地球化学国家重点实验室/中国科学院地球化学研究所,贵阳,550002;矿床地球化学国家重点实验室/中国科学院地球化学研究所,贵阳550002;中国科学院研究生院,北京100049 |
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| 基金项目： | 国家自然科学基金项目(40972071); 国家重点基础研究发展计划项目(2009CB421005) |
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| 摘 要： | 方解石是白秧坪多金属矿集区东矿带矿石中的主要脉石矿物。不同产状矿体中方解石的REE地球化学特征研究表明,3个矿段成矿期方解石具有2种稀土模式:LREE(轻稀土元素)富集型和相对平坦型;前者表明成矿过程中没有LREE明显带出的迹象,残余热液继承了前期成矿热液的特征,而后者表明成矿过程中有LREE带出。不同类型矿体方解石中REE含量、有关参数和稀土配分模式等均变化较大,但在地球化学特征上具有连续变化规律,显示为同源不同阶段的产物。方解石为热液成因方解石,结合其他同位素的资料和矿区的地质背景,得出成矿流体以大气降水与围岩反应形成的热卤水为主、深部流体参与其成矿作用的观点。成矿过程中,由早到晚,成矿环境表现为还原向氧化环境变化。
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| 关 键 词： | REE 地球化学 方解石 白秧坪东矿带 滇西北 |
Significance and Characteristics of REE Geochemistry in Calcite in the Eastern Ore Belt of the Baiyangping Poly-Metallic Metallogenic Province,Northwestern Yunnan Province,China |
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| FENG Cai-xia,BI Xian-wu,WU Li-yan,ZOU Zhi-chao,TANG Yong-yong. Significance and Characteristics of REE Geochemistry in Calcite in the Eastern Ore Belt of the Baiyangping Poly-Metallic Metallogenic Province,Northwestern Yunnan Province,China[J]. Journal of Jilin Unviersity:Earth Science Edition, 2011, 41(5): 1397-1406 |
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| Authors: | FENG Cai-xia BI Xian-wu WU Li-yan ZOU Zhi-chao TANG Yong-yong |
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| Affiliation: | FENG Cai-xia1,BI Xian-wu1,WU Li-yan1,ZOU Zhi-chao1,2,TANG Yong-yong1,2 1.The State Key Laboratory of Ore Deposit Geochemistry/Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550002,China 2.Graduate School of Chinese Academy of Sciences,Beijing 100049,China |
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| Abstract: | Calcite is a dominant gangue mineral in the eastern ore belt of Baiyangping poly-metallic metallogenic province.Geochemical characteristics of rare earth element(REE) of calcite from different ore bodies reveal that there are two types of REE distribution patterns: light rare earth element(LREE)-enriched and flat REE.The former represents that the REE behavior of calcite is that of inherited from pre-hydrothermal ore-forming hydrothermal features and the LREE was not apparently carried out during the minera... |
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| Keywords: | rare earth elements(REE) geochemistry calcite the eastern ore belt of Baiyangping poly-metallic metallogenic province northwestern Yunnan |
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