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| 磷对过铝质岩浆液相线温度影响的实验研究 | |
| 引用本文： | 唐勇,张辉,刘丛强,饶冰. 磷对过铝质岩浆液相线温度影响的实验研究[J]. 地球化学, 2009, 38(1) |
| 作者姓名： | 唐勇 张辉 刘丛强 饶冰 |
| 作者单位： | 1. 中国科学院,地球化学研究所,贵州,贵阳,550002中国科学院,研究生院,北京,100049 2. 中国科学院,地球化学研究所,贵州,贵阳,550002 3. 南京大学,内生金属矿床成矿机制研究国家重点实验室,江苏,南京,210093 |
| 基金项目： | 国家自然科学基金,国家重点基础研究发展规划(973计划) |
| 摘 要： | 以宜春414岩体中的钠长花岗岩作为实验初始物,利用RQV-快速内冷淬火高温高压装置实验研究了100MPa压力、含5%H2O条件下,P对过铝质花岗岩液相线温度的影响.实验结果表明,碱性长石是最早结晶的矿物;随着体系中P2O5含量从0.27%增加到7.71%,液相线温度从最初的810℃降低到740℃,表明P有效地降低了过铝质岩浆体系的液相线温度.在过铝质岩浆体系中,P5+与Al3+的结合形成AlPO4,降低了熔体中碱性长石组分的活度,很可能是液相线温度降低的机制. |
| 关 键 词： | 磷 过铝质花岗岩 液相线温度 |
Experimental study of effect of phosphorous on liquidus temperature of peraluminous magmatic system |
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| TANG Yong,ZHANG Hui,LIU Cong-qiang,RAO Bing. Experimental study of effect of phosphorous on liquidus temperature of peraluminous magmatic system[J]. Geochimica, 2009, 38(1) | |
| Authors: | TANG Yong ZHANG Hui LIU Cong-qiang RAO Bing |
| Affiliation: | TANG Yong1,2,ZHANG Hui1,LIU Cong-qiang1 and RAO Bing31.Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550002,China,2.Graduate University of Chinese Academy of Sciences,Beijing 100049,3.State Key Laboratory for Mineral Deposits Research,Nanjing University,Nanjing 210093 |
| Abstract: | The effect of phosphorous on liquidus temperature of peraluminous granite was experimentally studied in rapid-quenched cold+ sealed vessels(RQV) at 100 MPa in this paper.The albite granite of Yichun stock was closed as the initial composition for experiments with 5% H2O.The experimental result shows that alkali feldspar is the initial liquidus crystalline phase.Phosphorus can effectively reduce the liquidus temperature of the peraluminous magmatic systems.With increasing phosphorus content in melt from 0.27... |
| Keywords: | phosphorous peraluminous granite liquidus temperature |
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