| 滇东磷矿风化型矿石的判别指标讨论及次生风化富集作用 |
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| 引用本文： | 戈定夷,刘永先.滇东磷矿风化型矿石的判别指标讨论及次生风化富集作用[J].矿物岩石,1994,14(3):29-42. |
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| 作者姓名： | 戈定夷 刘永先 |
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| 作者单位： | 成都理工学院 |
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| 摘 要： | 风化型磷矿石－风化磷块岩是滇东最主要的磷矿石，为判别矿石为原生成风化磷块岩，前人已提出过１０余种作为判别标志的风化指标，但是这些指标的计算仅以矿石的化学组成为依据。笔者研究后指出，应以次生风化作用过程中磷块岩的组成和结构变化为基础，再合理使用上述某些判别指标，才能正确确定风化矿石，决定其利用价值和方法。笔者还指出，在次生风化作用中被溶蚀的不仅是碳酸盐，只要条件适当，石英和粘土矿物也可以溶蚀，使磷矿石品位增高，结构疏松，成为有利于洗选的优质矿石。
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| 关 键 词： | 云南省 下寒武统 磷块岩 风化指标 次生富集作用 |
A DISCUSSION ON WEATHERING INDEXES OF PHOSPHORUS ORE FROM EASTERN YUNNAN AND THE WEATHERING PROCESS OF PHOSPHORITE |
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| Ge Dingyi,Liu Yongxian,Zeng Yunfu.A DISCUSSION ON WEATHERING INDEXES OF PHOSPHORUS ORE FROM EASTERN YUNNAN AND THE WEATHERING PROCESS OF PHOSPHORITE[J].Journal of Mineralogy and Petrology,1994,14(3):29-42. |
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| Authors: | Ge Dingyi Liu Yongxian Zeng Yunfu |
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| Abstract: | IN Eastern Yunnan staple phosphorus ore is of weathered type. More than 10 weather-ing indexes have been recommended for determining weathered phosphorite,All of these indexes are only based on the chemical composition of the ore. In this paper it is pointed out that study of the physieal properties and mineralogical composition of phosphorite is important.Based on this study and using some of the weathering indexes satisfactory result will be obtained in determining the weathered phosphorite and estimating the applicability of it.In this paper it is also pointed out that not only carbonate but also quartz and illite are solvable in the weathering process,It leads the phosphorite to be more porous and richer in phosphate. |
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| Keywords: | Yunnan Province Lower Cambrian phosphorite weathering index downward enrich-ment |
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