The Earth's Lower Mantle

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The book offers a comprehensive examination of the Earth's lower mantle, detailing the composition and structure through the study of minerals found in diamonds worldwide. It categorizes these minerals into three associations: ultramafic, mafic, and carbonatic, with a focus on the carbonatic association due to its relevance to diamond formation. Additionally, it explores the heterogeneous nature of the lower mantle, revealing seismic boundaries and phase transitions. The final section contrasts observed and experimental data, suggesting a more intricate planetary history and a primarily non-chondritic composition.