The formation of saline mantle fluids by open-system crystallization of hydrous silicate-rich vein assemblages - Evidence from fluid inclusions and their host phases in MARID xenoliths from the central Kaapvaal Craton, South Africa
The composition of texturally primary fluid inclusions and their host phases clinopyroxene, K-richterite, and zircon were investigated in two MARID-type (mica-amphibole-rutile-ilmenite-diopside) mantle xenoliths sampled by the Kimberley cluster of Cretaceous kimberlites erupted in the central Kaapvaal Craton, South Africa. P-T conditions of crystallization for the MARID assemblages of 4.2GPa and 960°C were estimated based on Ca-in-opx thermometry and the assumption of a 40mW/m2 geotherm applied...[Show more]
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|Source:||Geochimica et Cosmochimica Acta|
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