| 白城-通辽地区第三系地浸砂岩铀成矿后生氧化条件分析 |
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| 关键词:Baicheng-Tongliao area Tertiary epigenetic oxidation in-situ leachable sandstone uranium mineralization |
| 基金项目:国家教育部博士点基金项目（编号：1999014513） |
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| 摘要: |
| Epigenetic Oxidation of Tertiary Sediments and Its Contribution to In-situ Leachable Sandstone Uranium Mineralization in the Baicheng-Tongliao Area |
| Based on studying spatial distribution of epigenetic oxidation, mineral associations, zoning of accompanying elements, (Fe(3+/)Fe2+ ratios of epigenetic oxidation in Tertiary Da′an Formation and Taikang Formation, this paper concludes that the oxidation type of Taikong Formation belongs to phreatic oxidation and that of Da′an Formation to phreatic-interstratified oxidation. Ura-(nium) mineralization in Taikang Formation is small in size and hence of no importance in uranium exploration. On the contrary, mine-(ralization) in Dan′an Formation has the features of interformational oxidation which provides prerequisite for the formation of large-size sandstone uranium deposits. Hence, the Da′an Formation is a favorable formation for ore prospecting in this area. |
| ZHANG Zhen-qiang,SANG Ji-sheng,JIN Cheng-zhu.2005.Epigenetic Oxidation of Tertiary Sediments and Its Contribution to In-situ Leachable Sandstone Uranium Mineralization in the Baicheng-Tongliao Area[J].Acta Geoscientica Sinica,26(5):461-464. |
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