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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:

2006年第04期

Page:

21-25

Research Field:

Publishing date:

Info

Title:

Thermodynamics Model for Dissolution of Petrogenetic Minerals of Clasolite and Its Geological Significances

Author(s):

ZHANG Meng¹; HUANG Si-jing¹; FENG Ming-shi²; WANG Qi²;  HUANG Yu-x iong ²; DONG Shao-feng²; PENG Mei-li²

1. State Key Laboratory o fOil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610069, Sichuan, China; 2. School of Earth Sciences, Chengdu University of Technology, Chengdu 610059, Sichuan, China

Keywords:

clasolite;  petrogenetic mineral;  dissolution;  thermodynamic model;  geological significances

PACS:

P578.6;O795

DOI:

-

Abstract:

According to equilibrium principle of thermodynamics, this paper calculates the increment of Gibbs free energy(ΔG)and equilibrium constant(K)of the nine chemical reactions for dissolution of petrogenetic minerals of clasolite related to clastic diagenesis under different temperatures and pressures.The result of calculation shows that these petrogenetic minerals(i.e. K-feldspar, albite, anorthite, pyroxene and hornblende)related to clastic di- agenesis have comparatively weak stability to fight corrosion;The femic dark minerals, neutral and basic plagio- clase are much more easy to dissolute and even to appear more secondary interstice in acid solution than acid pla- gioclase and alkali feldspar,which can offer space and passageway for reservoir rock.

References:

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Memo

Memo:

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Common functions

Last Update: 2006-12-20