Some relations between the phases anorthite, zoisite and lawsonite at high temperatures and pressures

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ID: 302393
1962
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Abstract
Some compositions in the system CaO-Al 2 O 3 -SiO 2 -H 2 O have been studied in the temperature range 400-900 degrees C. and H 2 O pressures ranging from 5000 to 42,000 bars. The phase assemblage boundary of the reaction anorthite+corundum+water = zoisite+sillimanite has a slight negative slope. The assemblage anorthite+quartz+water is stable at H 2 O pressure below 12,000 bars at 800 degrees C. and 14,000 bars at 400 degrees C. Clinozoisite and zoisite are the stable phases at high pressures, but at H 2 O pressures above 23,000 bars at 400 degrees -600 degrees C. and 20,000 bars at 850 degrees C., lawsonite is the stable phase.
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openalex_W2145685611 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Carl W. F. T. Pistorius, G. C. Kennedy, S. Sourirajan
Journal american journal of science
Year 1962
DOI
10.2475/ajs.260.1.44
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