| Metallogenic Model of Bauxite in Central Guizhou Province: an Example of Lindai Deposit |
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| 作者姓名： | LING Kunyue ZHU Xiaoqing WANG Zhonggang HAN Tao TANG Haoshu and CHEN Wenyi |
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| 作者单位： | 1 Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, Guizhou, China;2 University of Chinese Academy of Sciences, Beijing 100049, China;3 Institute of Geology, Guizhou Bureau of Geology and Minerals, Guiyang 550004, Guizhou, China |
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| 基金项目： | This work was granted by the fund of State Key Laboratory of Ore Deposit Geochemistry (SKLODG-ZY125-01) and the Major Project of Chinese National Programs for Fundamental Research and Development (973 Program)(No. 2014CB440906 and 2012CB416602). |
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| 摘 要： | The bauxites in central Guizhou are hosted by the Lower Carboniferous Jiujialu Formation.Geochemistrial characteristics of the Lindai bauxite deposit indicate that the underlying Shilengshui Formation dolomite is the precursor rock of mineral resources.Weathering simulation experiments show that Si is most likely to migrate with groundwater,the migration rate of which is several magnitude higher than Al and Fe under nature conditions （pH=3-9）.The neutral and acid nonreducing condition is the most conducive to the Al rich and Si removal,while the acid reducing conditions is the most conducive to the Al rich and Fe removal.In the process of bauxite formation,coal beds overlying the Al-bearing rock series or other rock formation rich in organic materials can produce acid reducing groundwater,which are important for the bauxite formation.Finally,propose the metallogenic model of the bauxite in central Guizhou Province and put forward three new words which are ＂original bauxite material＂,＂bauxite material＂ and ＂original bauxite＂.
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| 关 键 词： | 铝土矿矿床 成矿模式 贵州省 存款 型号 还原条件 贵州中部 矿产资源 |
| 收稿时间： | 2013/3/26 0:00:00 |
| 修稿时间： | 8/8/2013 12:00:00 AM |
Metallogenic Model of Bauxite in Central Guizhou Province： an Example of Lindai Deposit |
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| Authors: | LING Kunyue ZHU Xiaoqing WANG Zhonggang HAN Tao TANG Haoshu CHEN Wenyi |
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| Institution: | [1]Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, Guizhou, China [2]University of Chinese Academy of Sciences, Beijing 100049, China [3]Institute of Geology, Guizhou Bureau of Geology and Minerals, Guiyang 550004, Guizhou, China |
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| Abstract: | The bauxites in central Guizhou are hosted by the Lower Carboniferous Jiujialu Formation. Geochemistrial characteristics of the Lindai bauxite deposit indicate that the underlying Shilengshui Formation dolomite is the precursor rock of mineral resources. Weathering simulation experiments show that Si is most likely to migrate with groundwater, the migration rate of which is several magnitude higher than Al and Fe under nature conditions (pH=3–9). The neutral and acid non‐reducing condition is the most conducive to the Al rich and Si removal, while the acid reducing conditions is the most conducive to the Al rich and Fe removal. In the process of bauxite formation, coal beds overlying the Al‐bearing rock series or other rock formation rich in organic materials can produce acid reducing groundwater, which are important for the bauxite formation. Finally, propose the metallogenic model of the bauxite in central Guizhou Province and put forward three new words which are “original bauxite material”, “bauxite material” and “original bauxite”. |
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| Keywords: | bauxite groundwater geochemistrial characteristics weathering simulation experiments Central Guizhou Province |
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