| 引用本文: | 孙洁, 赵晓东, 李军敏, 陈莉, 吕涛, 陈阳, 贾德龙.重庆洪官渡铝土矿床镓元素地球化学特征及其成矿环境探讨[J].沉积与特提斯地质,2014,(3):106-112.[点击复制] |
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| 重庆洪官渡铝土矿床镓元素地球化学特征及其成矿环境探讨 |
| 孙洁,赵晓东,李军敏,陈莉,吕涛,陈阳,贾德龙 |
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(1. 成都地质矿产研究所, 四川 成都 610081;
2. 重庆地质矿产研究院, 重庆 404100;
3. 中国地质大学, 北京 100083) |
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| 摘要: |
| 重庆洪官渡铝土矿床伴生Ga含量普遍超过了工业综合利用指标。Ga与Cr、TiO2呈强正相关,与V呈中等程度的正相关,与Al2O3、Fe2O3不相关。根据Sr/Ba、u/Th、Ga/Al等地球化学指标值特征,判断该铝土矿床的含矿岩系属海陆交互沉积,但以陆相沉积为主;同时,洪官渡铝土矿床是在以淡水作用为主的弱酸性氧化环境的中形成。 |
| 关键词: 镓 铝土矿床 地球化学 成矿环境 重庆 |
| DOI： |
| 附件 |
| 投稿时间：2014-02-10修订日期：2014-02-27 |
| 基金项目: |
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| Geochemical signatures and mineralization environments of the element gallium from the Hongguandu bauxite deposit in Chongqing |
| SUN Jie, ZHAO Xiao-dong, LI Jun-min, CHEN Li, LU Tao, CHEN Yang, JIA De-long |
(1. Chengdu Institute of Geology and Mineral Resources, Chengdu 610081, Sichuan, China;
2. Chongqing Institute of Geology and Mineral Resources, Chongqing 404100, China;
3. China University of Geosciences, Beijing 100083, China) |
| Abstract: |
| The accessory element gallium contents in the Hongguandu bauxite deposit in Chongqing are greater than the minimum industrial indices for the multipurpose utilization. It is inferred from the geochemical indices such as Sr/Ba, U/Th and Ga/Al ratios that the ore-bearing rock series should belong to the continental-dominated marinecontinental alternative deposits in the bauxite deposit. There is a highly positive correlation of Ga contents with Cr and TiO2 contents and a moderately positive correlation of Ga contents with V contents, while no correlation with Al2O3 and Fe2O3 contents. It follows that the Hongguandu bauxite deposit in Chongqing resulted from the freshwater processes in the weakly acidic oxidized environments. |
| Key words: gallium bauxite deposit geochemistry metallogenic environment Chongqing |