Liquid immiscibility in the join NaAlSi 3 O 8 -Na 2 CO 3 -H 2 O and its bearing on the genesis of carbonatites

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ID: 293659
1968
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Abstract
Phase relations in the above join were studied through the system Na ~2~ O-Al ~2~ O ~3~ -SiO ~2~ -CO ~2~ -H ~2~ O at 1 kb. Phases encountered were albite, cancrinite, sodium carbonate, a silica-rich liquid, an Na ~2~ CO ~3~ -rich liquid, and vapor. Albite is the main silicate phase at low water contents while cancrinite is the main silicate phase at high water contents. Three fluid phases coexist: (1) an undersaturated alkaline silicate liquid, (2) an alkaline carbonate liquid with a small amount of dissolved silicate, and (3) a vapor phase with a composition varying between H ~2~ O and CO ~2~ and containing Na ~2~ O and SiO ~2~ in solution. These fluid phases are compared with nepheline or ijolite magmas, carbonatite melts, and fenitizing solutions, respectively.
Reference Key
openalex_W2330559887 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors A. F. Koster van Groos, Peter J. Wyllie
Journal american journal of science
Year 1968
DOI
10.2475/ajs.266.10.932
URL
https://doi.org/10.2475/ajs.266.10.932
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