| 云南省中西部红色风化壳中铂族元素分布特征 |
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| 引用本文： | 刘英超,杨竹森,田世洪,于玉帅.云南省中西部红色风化壳中铂族元素分布特征[J].地质学报,2011,85(2):272-281. |
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| 作者姓名： | 刘英超 杨竹森 田世洪 于玉帅 |
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| 作者单位： | 中国地质科学院地质研究所,中国地质科学院矿产资源研究所,中国地质科学院矿产资源研究所,中国地质科学院矿产资源研究所 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘 要： | 近年来,铂族元素以其广泛的地质活动环境受到越来越多的关注,人们对铂族元素的研究也从其在硫化物熔体、硅酸盐熔体和热液流体中的富集成矿行为逐渐延展到其在表生风化过程中的地球化学迁移行为.本文通过对我国云南省中西部潞西菲红、元谋朱布和弥渡金宝山3个具有铂族元素矿化的超基性岩体形成的红色风化壳研究发现,三地风化壳化学风化程度远...
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| 关 键 词： | 铂族元素 超基性岩 红色风化壳 地球化学行为 分布特征 云南 |
| 收稿时间： | 2009/11/22 0:00:00 |
| 修稿时间： | 2010/11/9 0:00:00 |
Geochemical Characters of Platinum Group Elements in Regoliths on Middle to West in Yunnan Province |
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| Liu Yingchao,Yang Zhusen,Tian Shihong and Yu Yushuai.Geochemical Characters of Platinum Group Elements in Regoliths on Middle to West in Yunnan Province[J].Acta Geologica Sinica,2011,85(2):272-281. |
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| Authors: | Liu Yingchao Yang Zhusen Tian Shihong and Yu Yushuai |
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| Institution: | Institute of Geology, CAGS,Institute of Mineral Resources, CAGS,Institute of Mineral Resources, CAGS,Institute of Mineral Resources, CAGS |
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| Abstract: | PGE (Platinum Group Elements) act in many geologic environments and more attention is taken to their supergene geochemical behaviors in recent years. Based on the investigation in three red regolith profiles which are developed over the bedrocks of ultrabasic complexes in Feihong in Luxi, Zhubu in Yuanmou and Jinbaoshan in Midu, middle to western Yunnan, the authors find that comparing with the red regoliths in the world, the lateritization degrees in the three regoliths are not high and the highest to lowest degrees are regolith on Feihong>regolith on Zhubu>regolith on Jinbaoshan. According to the PGE contents of samples from these regolith sections, the concentration degree of the PGE is higher accompanying with stronger lateritization. In the same regolith the six elements have different concentration degrees, which indicate that the six elements have concentrated and separated during lateritization. In this process, Fe2+ which can reduce the PGE complex, and minerals including Fe3+ which can adsorb the PGE act as the main positive factors for the PGE concentration. Different geochemical behaviors of the six PGE lead their separation in the red regoliths. During the lateritization, Rh has the very similar characters with all PGE, so Rh may act as typomorphic minerals of the PGE for their supergene geochemical behaviors. PGE and Au have similar distributing characters in the three regoliths, and PGE is a little higher concentration than Au in the three regoliths, so due to the occurrences of red clay type gold deposits in the world there must be some red clay PGE deposits in the world. |
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| Keywords: | Platinum Group Elements Ultrabasic rocks Red regolith Geochemical behavior Distribution characters Yunnan province |
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