| 老挝东泰钾盐矿区矿床控矿因素探析 |
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| 引用本文： | 成世才,宋永芬,马浩宁,亓协全,潘爱宏.老挝东泰钾盐矿区矿床控矿因素探析[J].山东地质,2012(4):15-18,29. |
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| 作者姓名： | 成世才 宋永芬 马浩宁 亓协全 潘爱宏 |
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| 作者单位： | [1]中化地质矿山总局山东地质勘查院,山东济南250013 [2]济南春旭化工设计有限公司,山东济南250014 [3]山东省核工业二四八地质大队,山东青岛266600 [4]山东招金地质勘查有限公司,山东招远265400 |
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| 摘 要： | 通过对区域地质、构造和岩相古地理的研究，从成矿阶段的角度，将控矿因素分为背景控矿因素、沉积控矿因素、改造控矿因素。得出：背景因素为区域性盆地沉积环境形成条件；沉积控矿因素直接控制了工区石盐矿层的层理形态；改造控矿因素中，局部构造对矿层的改造是矿区盐层多呈背斜分布且轴部较两翼矿层大幅变厚的原因，钾石盐出现在光卤石矿层顶部是因为上部裂隙水或者封存的老卤水向下侵蚀光卤石矿层顶部，溶蚀了溶解度相对较大的MgCl2，而溶解度相对较小的KCl被保留下来，从而多在上盐层光卤石矿顶部形成再生或次生钾石盐矿。
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| 关 键 词： | 钾盐 岩相古地理 控矿因素 老挝东泰 |
Primary Study on Ore- controlling Factors of Sylvine Mining Areas in Dongtai of Laos |
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| CHENG Shicai,SONG Yongfen,MA Haoning,QI Xiequan,PAN Aihong.Primary Study on Ore- controlling Factors of Sylvine Mining Areas in Dongtai of Laos[J].Geology of Shandong,2012(4):15-18,29. |
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| Authors: | CHENG Shicai SONG Yongfen MA Haoning QI Xiequan PAN Aihong |
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| Institution: | 1. Shandong Geological Prospecting Institute of China Chemical Geology and Gine Burea, Shandong Jinan 250013, Chinas2. Chunxu Chemical Design Limited Corporation in Jinan City, Shandong Jinan 250013, China; 3. No. 248 Geological Brigade of Nuclear Industry in Shandong Province, Shandong Qingdao 266600, China; 4. Zhaojin Geological Exploration Limited Corporation in Shandong Province, Shandong Zhaoyuan 265400, China) |
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| Abstract: | Through study on regional geology, structure and lithofacies paleogeography, from the aspect of mineralization, ore - controlling factors can be divided into background of ore - controlling factors, deposi- tion ore - controlling factors and transformation ore - controlling factors. It is concluded that background ore - controlling factors are the forming conditions for sedimentary environment of regional basins; deposi- tion ore- controlling factors directly control the bedding patterns of the rock salt layers; while in transfor- mation ore - controlling factors, the transformation of local structures to layers will cause the salt - bed distributed in anticline, and the salt- bed in axis partis are thicker than in the wings. Sylvite occurred on the top of carnallitebed, because the upper fracture water or old brine eroded carnallite - bed from the top to down part, and eroded MgCl2 with relative high solubility, while KCl with relative low solubility was preserved. Thus, recrystallized or secondary crystallized halite had been formed on the top of carnallite bed. |
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| Keywords: | Potassium salt lithofacies paleogeography ore - controlling factors Dongtai in Laos |
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