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| Keywords | |
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acidic fluid |
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plagioclase |
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stability |
| Authors | |
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ZHANG Hui |
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SONG Tu-Shun |
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LIU Li |
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FU Jie |
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LIU Si-Lan |
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YANG Guo-Zhen |
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ZHANG He |
| PubMed | |
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Article by Zhang, H. |
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Article by Song, T. S. |
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Article by Liu, L. |
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Article by Fu, J. |
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Article by Liu, S. L. |
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Article by Yang, G. Z. |
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Article by Zhang, H. |
Stability of plagioclase under acidic fluid action
ZHANG Hui, SONG Tu-Shun, LIU Li, FU Jie, LIU Si-Lan, YANG Guo-Zhen, ZHANG He
College of Earth Sciences��Jilin University��Changchun 130061��China
The authors carried out interaction experiment of acid fluid with plagioclase under different temperatures��through the analysis of ultraviolet spectrophotometer and scanning electron microscope�� The experiment showed that ��At low temperatures plagioclase is stable�� which is marked by the ascendancy of dissolution; while at high temperatures��plagioclase is unstable��which gives priority to with corrosion��dissolution�� As the reaction temperatures rise��the mass losses increase�� ��Plagioclase formed belt solution pores along cleavages��the surface came into being intragranular dissolved pores�� ��At 160�� and 190�棬the secondary kaolinite precipitation formed��as temperatures rise kaolinite crystalline form becomes good�� experimental reaction intensity increases�� �� With the reaction temperature rise��the concentrations of K+ ��SiO2 and salinity increase��