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http://dx.doi.org/10.9719/EEG.2017.50.6.509

Theoretical Approach of the Quartz Dissolution Rate under Various Temperature, pH and Applied Stress Conditions  

Choi, Junghae (Department of Earthscience Education, Kyungpook National University)
Publication Information
Economic and Environmental Geology / v.50, no.6, 2017 , pp. 509-515 More about this Journal
Abstract
Quartz is the most abundant mineral in the Earth's continental crust. Therefore, understanding of quartz dissolution and precipitation is very important to know about weathering processes and interactions between rocks and water in hydrothermal and metamorphic environments. This paper presents a basic review on the research about quartz dissolution mechanism under various physico-chemical conditions. We rearranged the relationship between each physico-chemical factor and dissolution mechanism from the results of previous researchers in this paper. From this result, we understood that quartz dissolution and precipitation are affected by each factor such as temperature, pH, and applied stress conditions at contact point. In particular, we recognized that the high pH and temperature conditions have different anion concentrations on mineral's surface. As a result, high pH and temperature conditions have a better effect than applied stress condition to the quartz dissolution mechanism.
Keywords
quartz dissolution; precipitation; Langmuir and Freundlich isotherm; Arrhenius parameters; activation volume;
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