The nephelinekalsilite system; II, Phase relations

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ID: 294188
1958
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Abstract
Phase equilibrium studies in the system NaAlSiO ~4~ -KAlSiO ~4~ at subsolidus temperatures have demonstrated that a solvus, or miscibility gap, is present and in a general way it is similar to the solvus between albite and orthoclase. At low temperatures the miscibility gap extends in composition from Na ~3~ KAl ~4~ Si ~4~ O ~16~ to KAlSiO ~4~ . The stable modifications of KAlSiO ~4~ were found to be kalsilite and a high temperature orthorhombic modification while kaliophilite is believed to be a metastable phase at all temperatures at atmospheric pressure. NaAlSiO ~4~ has a high temperature form stable between 850 degrees C and 1250 degrees C. . . . Evidence is presented to show that Na ~3~ KAl ~4~ Si ~4~ O ~16~ is a compound (nepheline) and not merely a single composition in a solid solution series.
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openalex_W2329544643 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors O. F. Tuttle, J. V. Smith
Journal american journal of science
Year 1958
DOI
10.2475/ajs.256.8.571
URL
https://ajs.scholasticahq.com/article/58721.pdf
Keywords Keywords not found

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