| 张雪峰.广西花山花岗岩体地球化学特征及产铀潜力分析[J].地质与勘探,2011,47(6):1051-1058 |
| 广西花山花岗岩体地球化学特征及产铀潜力分析 |
| Geochemical Characteristics of the Huashan Granites in GuangxiProvince and Their Uranium-Bearing Potential |
| 投稿时间：2011-04-02 修订日期：2011-07-06 |
| DOI： |
| 中文关键词: 花山 花岗岩 地球化学 铀 |
| 英文关键词: Huashan, granite, geochemical, uranium |
| 基金项目: |
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| 中文摘要: |
| [摘 要]广西花山花岗岩体为燕山期形成的中粗粒黑云母花岗岩。通过其主量元素、微量元素和稀土元素地球化学特征的研究表明:花山岩体具有富碱、高钾、低磷、高铁镁比值,富含U、Th、Pb、Nb、Ta等高场强元素(HFSE)和Rb、K 等大离子亲石元素(LILE), 明显的Ti、Sr、P 、Ba 负异常等特征。稀土配分模式为右倾的轻稀土富集型,具明显的Eu 负异常,LREE 分异显著,而HREE 分异不强。岩石地球化学特征初步表明其为壳幔混合来源的A 型花岗岩。花山岩体为富铀岩体,平均U=18.34×10-6,具有和华南产铀花岗岩一致的特征岩石地球化学组分,存在广泛的蚀变和矿化,表现出了比较良好的产铀潜力。 |
| 英文摘要: |
| Abstract:The Huashan granitoid body in Guangxi formed in the Yanshanian, petrographycally as medium-coarse biotite granite. The research of major elements, trace elements and rare earth elements indicate that it is characterized by rich alkaline, high potassium, low phosphor, high TFeO/ MgO and
high contents of high field-strength elements (HFSE) such as U, Th, Pb, Nb, and Ta and evident negative anomalies of Ti, Sr, P and Ba. On the REE diagrams it shows apparently negative Eu anomalies, significant differentiation of LREE, and higher contents of LREE than HREE. The lithogeochemical
characteristics of the Huashan granitoid body indicate it is the A-type granite. The Huashan granitoid body is rich in U with U=18.34×10-6 on average,
having similar lithogeochemical characteristics, hydrothermal alteration and U mineralization, displaying a good uranium-bearing potential. |
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