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Water-saturated melting relations to 5 kilobars of three Leucite Hills lavas

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The water-saturated phase relations of three Leucite Hills lavas have been determined at pressures up to 5 kb. Phlogopite is the major primary liquidus phase in orendite and wyomingite at pressures, > 1 kb, but clinopyroxene and olivine are the major primary liquidus phases in madupite at pressures up to 5 kb. Leucite is a liquidus phase in all three magmas at pressures <0.5kb. The experimental results are in reasonable agreement with the inferred crystallization sequences for the Leucite Hills lavas and have applications to the crystallization and differentiation of potassium-rich magmas within the crust.

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Barton, M., Hamilton, D.L. Water-saturated melting relations to 5 kilobars of three Leucite Hills lavas. Contr. Mineral. and Petrol. 66, 41–49 (1978). https://doi.org/10.1007/BF00376084

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  • Crystallization
  • Liquidus Phase
  • Olivine
  • Mineral Resource
  • Phase Relation