Feldspar-liquid equilibria in peralkaline acid liquids; an experimental study

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ID: 294177
1967
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Abstract
The liquidus surfaces of four pseudoternary joins have been determined. A plot of the molecular ratio (Na ~2~ O + K ~2~ O)/Al ~2~ O ~3~ (peralkalinity) versus Na ~2~ O/(Na ~2~ O + K ~2~ O) (sodicity) for peralkaline acid volcanic and plutonic rocks shows a distribution of points closely corresponding to that predicted from the experimental results. This gives support to the hypothesis that crystal-liquid processes have played important parts in the genesis of these rocks. Fractional crystallization or partial melting of any slightly alumina-undersaturated, silica-saturated trachyte or syenite, or of a similarly alumina-deficient rhyolite or granite, would be likely to give rise to a sodic peralkaline acid liquid.
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openalex_W2328047629 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors R. N. Thompson, W. S. MacKenzie
Journal american journal of science
Year 1967
DOI
10.2475/ajs.265.8.714
URL
https://ajs.scholasticahq.com/article/59197.pdf
Keywords Keywords not found

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