The Alkali-Feldspar Join in the System NaAlSiO4-KAlSiO4-SiO2
The Alkali-Feldspar Join in the System NaAlSiO4-KAlSiO4-SiO2
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NaAlSiO4-KAlSiO4-SiO2体系中的碱长石连接
DOI：
10.1086/625759
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发表时间：
1950
期刊：
影响因子：
--
通讯作者：
J. F. Schairer
中科院分区：
文献类型：
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作者：
J. F. Schairer
对NaAlSiO_(4)-KAlSiO_(4)-SiO_(2)体系中碱长石-NaAlSi_(3)O_(8)-NaAlSi_(3)O_(8)体系的研究表明，这些碱长石之间有一系列不间断的固溶体，其熔融和冻结曲线的最低值为$1,063^{\CIRC}\PM3^{CIRC}C$$。钾长石的重量为35%。所有钾长石重量百分比超过49%的碱长石成分都不一致地熔化，并存在白榴石晶体，只有在较高的温度下才会消失。给出了系统$$NaAlSiO_{4}-KAlSiO_{4}-SiO_{2}$$的修正平衡图，其依据的数据将在以后全文公布。
A study, of the alkali-feldspar join $$KAlSi_{3}O_{8}-NaAlSi_{3}O_{8}$$ in the system $$NaAlSiO_{4}-KAlSiO_{4}-SiO_{2}$$ shows an unbroken series of solid solutions between these alkali feldspars with a minimum on the melting and freezing curves at $$1,063^{\circ} \pm 3^{\circ} C$$. at 35 weight per cent potash feldspar. All alkali-feldspar compositions with more than 49 weight per cent potash feldspar melt incongruently and have leucite crystals present, which disappear only at higher temperatures. A revised equilibrium diagram for the system $$NaAlSiO_{4}-KAlSiO_{4}-SiO_{2}$$ is given; the data on which it is based will be published in full later.