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| Modeling H, Na, and K diffusion in plagioclase feldspar by relating point defect parameters to bulk properties | |
| Baohua Zhang; Shuangming Shan; Xiaoping Wu | |
| 2016 | |
| Source Publication | Physics & Chemistry of Minerals
 |
| Volume | 43Issue:2Pages:151-159 |
| Abstract | Hydrogen and alkali ion diffusion in plagioclase feldspars is important to study the evolution of the crust and the kinetics of exsolution and ion-exchange reactions in feldspars. Using the available PVT equation of state of feldspars, we show that the diffusivities of H and alkali in plagioclase feldspars as a function of temperature can be successfully reproduced in terms of the bulk elastic and expansivity data through a thermodynamic model that interconnects point defect parameters with bulk properties. Our calculated diffusion coefficients of H, Na, and K well agree with experimental ones when uncertainties are considered. Additional point defect parameters such as activation enthalpy, activation entropy, and activation volume are also predicted. Furthermore, the electrical conductivity of feldspars inferred from our predicted diffusivities of H, Na, and K through the Nernst-Einstein equation is compared with previous experimental data. |
| Subject Area | 地球深部物质与流体作用地球化学 |
| Indexed By | SCI |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | http://ir.gyig.ac.cn/handle/352002/6093 |
| Collection | 地球内部物质高温高压实验室_地球内部物质高温高压实验室_期刊论文 |
| Recommended Citation GB/T 7714 | Baohua Zhang,Shuangming Shan,Xiaoping Wu. Modeling H, Na, and K diffusion in plagioclase feldspar by relating point defect parameters to bulk properties[J]. Physics & Chemistry of Minerals,2016,43(2):151-159. |
| APA | Baohua Zhang,Shuangming Shan,&Xiaoping Wu.(2016).Modeling H, Na, and K diffusion in plagioclase feldspar by relating point defect parameters to bulk properties.Physics & Chemistry of Minerals,43(2),151-159. |
| MLA | Baohua Zhang,et al."Modeling H, Na, and K diffusion in plagioclase feldspar by relating point defect parameters to bulk properties".Physics & Chemistry of Minerals 43.2(2016):151-159. |
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