Calcite and dolomite in intrusive carbonatites. I. Textural variations

摘要: Carbonatites are nominally igneous rocks, whose evolution commonly involves also a variety of postmagmatic processes, including exsolution, subsolidus re-equilibration mineral assemblages with fluids different provenance, hydrothermal crystallization, recrystallization and tectonic mobilization. Petrogenetic interpretation carbonatites assessment their potential impossible without understanding the textural compositional effects both magmatic processes on principal constituents these rocks. In present work, we describe major (micro)textural characteristics carbonatitic calcite dolomite in context magma evolution, fluid-rock interaction, or deformation, provide information variation minerals its relation to specific evolutionary processes.