| 固溶体矿物的热容与化学组成的关系 |
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| 引用本文： | 沙连堃.固溶体矿物的热容与化学组成的关系[J].桂林工学院学报,1991(1). |
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| 作者姓名： | 沙连堃 |
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| 作者单位： | 桂林冶金地质学院地质矿产勘查系 |
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| 摘 要： | 在固溶体混合热力学理论推导的基础上,首次给出了固溶体矿物的热容与化学组成的一般关系式。重要的造岩矿物镁橄榄石-铁橄榄石和钙长石-钠长石两对二元固溶体体系的热容与组成呈线性关系;而正铁辉石-顽火辉石二元固溶体则表现出非理想行为,其热容与组成开始呈非线性关系,随着温度升高,才趋于线性。实验资料与理论计算结果吻合。
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| 关 键 词： | 固溶体 矿物 热容 化学组成 理论模型 |
THE HEAT CAPACITIES OF SOLID SOLUTION MINERALS AS A FUNCTION OF CHEMICAL COMPOSITIONS |
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| Sha Liankun.THE HEAT CAPACITIES OF SOLID SOLUTION MINERALS AS A FUNCTION OF CHEMICAL COMPOSITIONS[J].Journal of Guilin University of Technology,1991(1). |
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| Authors: | Sha Liankun |
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| Affiliation: | Sha Liankun Department of Exploration Geology,Guilin College of Geology |
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| Abstract: | Based on the theoretical deduction of mixing thermodynamics of solidsolution, the author firstly presents a general relation of the isobaricheat capacity of solid solution mineral as a function of chemical composition.Heat capacities of two of the most important rock-forming mineralssuch as olivine (forsterite-fayalite), plagioclase (anorthite-albite) solidsolutions are linear with their compositions, but that of orthopyroxene(orthoferrosilite-enstatite) demonstrates obvious non-ideal behavior,showing non-linear relation with the mole fraction of orthoferrosilite andtending to be linear with increasing temperature. The experimental dataare well consistent with the theoretically calculated results. |
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| Keywords: | solid solution mineral heat capacity chemical composition theoretical model |
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