| Some High—P—Subtype and Low—P—Subtype F—Rich Granites in South China |
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| 引用本文： | 刘昌实,黄小龙,等.Some High—P—Subtype and Low—P—Subtype F—Rich Granites in South China[J].中国地球化学学报,1998,17(4):320-330. |
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| 作者姓名： | 刘昌实 黄小龙 |
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| 作者单位： | StateKeyLaboratoryofMineralDepositResearch,DepartmentofEarthSciences,NanjingUniversity,Nanjing210093 |
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| 摘 要： | The F-rich granites in South CHina could be distinguished as the high-P subtype and the low-P subtype according to their P2O5 contents.There are obvious differences in chemical composition of these two subtypes,The high-P subtype is strongly peraluminous and characterized by low silica and very low REE contents,while the low-P subtype is weakly peraluminous and characterized by high silica and very high REE contents.There are also some differences in chmical compositions of feldspars and micas for these two subtypes,The phosphorus of the high-P subtype mainly appears to be in the feldspar structure as PAlSi-2 substitution or subordinately in amblygonite as an accessory mineral,while the phosphorus of the low-P subtype is mainly in apatite and other phosphate minerals.
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| 关 键 词： | 酸性岩 华南地区 富氟花岗岩 五氧化二磷 矿物学 |
Some high-P-subtype and low-P-subtype F-rich granites in South China |
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| Liu Chnagshi,Huang Xiaolong,Wang Rucheng,Yin Lin,Chen Xiaoming,Chen Peirong.Some high-P-subtype and low-P-subtype F-rich granites in South China[J].Chinese Journal of Geochemistry,1998,17(4):320-330. |
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| Authors: | Liu Chnagshi Huang Xiaolong Wang Rucheng Yin Lin Chen Xiaoming Chen Peirong |
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| Institution: | (1) State Key Laboratory of Mineral Deposit Research, Department of Earth Sciences, Nanjing University, 210093 Nanjing |
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| Abstract: | The F-rich granites in South China could be distinguished as the high-P subtype and the low-P subtype according to their P2O5 contents. There are obvious differences in chemical composition of these two subtypes. The high-P subtype is strongly peraluminous
and characterized by low silica and very low REE contents, while the low-P subtype is weakly peraluminous and characterized
by high silica and very high REE contents. There are also some differences in chemical compositions of feldspars and micas
for these two subtypes. The phosphorus of the high-P subtype mainly appears to be in the feldspar structure as PAISi−2 substitution or subordinately in amblygonite as an accessory mineral, while the phosphorus of the low-P subtype is mainly
in apatite and other phosphate minerals.
This research project was supported by the National Natural Science Foundation of China (No. 49673183 and No. 49632080). |
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| Keywords: | F-rich granite high-P subtype low-P subtype South China |
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