| 河北高寺台杂岩体铂、钯地球化学分布和异常特征 |
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| 引用本文： | 张兴超,王爱枝,袁德志,韩存强.河北高寺台杂岩体铂、钯地球化学分布和异常特征[J].物探与化探,2008,32(3):261-266. |
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| 作者姓名： | 张兴超 王爱枝 袁德志 韩存强 |
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| 作者单位： | 河南省地质矿产勘查开发局,第三地质调查队,河南,信阳,464000 |
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| 基金项目： | 国土资源部地质科技项目 |
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| 摘 要： | 在高寺台超镁铁杂岩体发现了2种铂族元素异常:一种异常分布在杂岩体纯橄榄岩或橄榄岩带的镁质超基性岩中,与已知的含铂族铬铁矿有关,与已知的铬、钴、镍等矿化主金属的强异常密切共生。在这种异常中,钯呈甚低的背景分布,w(Pt)/w(Pd)大;另一种铂族元素异常呈带状沿杂岩体透辉岩带及其中的剪切带分布,其异常特征是铂、钯异常密切共生,w(Pt)/w(Pd)近于1,并且,在这种异常中,不伴生铬、镍等元素的强异常。这是一种新的铂、钯等元素的地球化学富集和矿化。研究表明,采用岩石、土壤、水系沉积物铂、钯地球化学勘查技术,可以发现难识别的铂族矿化。
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| 关 键 词： | 铂族元素 地球化学分布 超镁铁杂岩 铬铁矿 |
| 文章编号： | 1000-8918(2008)03-261-06 |
| 收稿时间： | 2006-10-12 |
| 修稿时间： | 2006年10月12 |
GEOCHEMICAL DISTRIBUTION AND ANOMALY CHARACTERISTICS OF Pt AND Pd IN THE GAOSITAI ULTRAMAFIC COMPLEX, HEBEI PROVINCE |
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| ZHANG Xing-chao,WANG Ai-zhi,YUAN De-zhi,HAN Cun-qiang.GEOCHEMICAL DISTRIBUTION AND ANOMALY CHARACTERISTICS OF Pt AND Pd IN THE GAOSITAI ULTRAMAFIC COMPLEX, HEBEI PROVINCE[J].Geophysical and Geochemical Exploration,2008,32(3):261-266. |
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| Authors: | ZHANG Xing-chao WANG Ai-zhi YUAN De-zhi HAN Cun-qiang |
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| Institution: | No.3 Geological Surveying Party, Henan Bureau of Geology and Mineral Exploration and Development, Xinyang 464000, China |
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| Abstract: | Geochemical Pt and Pd exploration led to the discovery of two precious metal anomalous concentrations in the Gaositai ultramafic complex, Hebei Province. Anomaly concentrations of Pt and Pd in rock, soil and stream sediments overlying the dunite and peridotite zone of the Gaositai complex coincide with the well-known PGE-bearing chromititc mineralization. These platinum anomalies are also associated with strong anomalies of such elements as Cr, Co and Ni. Nevertheless, Pd assumes very low background distribution, whereas the w(Pt)/w(Pd) ratio is higher. The second type of elevated PGE anomalous concentration follows the strike of the diopside zone and the shearing fault zone of the Gaositai ultramafic complex. These anomalies are characterized by strong anomaly intensity with a close relationship existent between Pt and Pd and the w(Pt)/w(Pd) ratio close to 1. However, no strong anomalies of Cr, Co and Ni are observed. Such a phenomenon is therefore thought to be the reflection of a new PGE mineralization. It is thus held that hidden PGE mineralization difficult to be recognized may be discovered by means of Pt and Pd geochemical exploration using rock, soil and stream sediment samples. |
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| Keywords: | geochemical distribution platinum-group element (PGE) ultramafic complex chromitite |
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