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Phase relations of carbonate-bearing eclogite assemblages from 2.5 to 5.5 GPa: implications for petrogenesis of carbonatites

Yaxley, Gregory; Brey, Gerhard


We have experimentally investigated the phase and melting relations of garnet + clinopyroxene + carbonate assemblages at 2.5-5.5 GPa, to assess the feasibility of carbonated eclogite as a source for some crustally emplaced carbonatites. The solidus of our composition was at ≈1,125 °C at 2.5 GPa, ≈1,225 °C at 3.5 GPa and ≈1,310 °C at 5.0 GPa. Melts were sodic calcio-dolomitic carbonatites, and were markedly more calcic than the dolomitic melts produced by partial melting of carbonated...[Show more]

CollectionsANU Research Publications
Date published: 2004
Type: Journal article
Source: Contributions to Mineralogy and Petrology
DOI: 10.1007/s00410-003-0517-3


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