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This book sheds valuable new light on the genetic mineralogy of lower-mantle diamonds and syngenetic minerals. It presents groundbreaking experimental results revealing the melting relations of ultrabasic and basic associations and a physicochemical peritectic mechanism of their evolution.
The experimental investigations included here reveal the key multicomponent, multiphase oxide-silicate-carbonate-carbon parental media for lower-mantle diamonds and syngenetic minerals. Consequently, readers will find extensive information on the diamond-parental oxide-silicate-carbonate-carbon melts-solutions that supplement the general features of lower-mantle diamond genesis and the most efficient ultrabasic-basic evolution. The experimental results on physicochemical aspects, combined with analytical mineralogy data, make it possible to create a generalized composition diagram of the diamond-parental melts-solutions, there by completing the mantle-carbonatite concept for the genesis of lower-mantle diamonds and syngenetic minerals.
Evolution of Magmatic and Diamond-Forming Systems of the Earth's Lower Mantle addresses the needs of all researchers studying the Earth's deepest structure, super-deep mineral formation including diamonds, and magmatic evolution.
I. Chemical and phase composition of lower mantle of the Earth: analytical and experimental data 1.1 Experimental estimations of mineral composition of the Earth mantle 1.2 Mineral associations of inclusions in the lower mantle diamonds 1.3 Inclusions of the lower mantle diamonds in kimberlites 1.4 Actual problems of experimental physico-chemical studies of magmatic and diamond-forming systems of the lower mantle References II. Experimental methods and techniques 2.1 Experimental equipment 2.2 Principles of experimental study of multicomponent and multiphases systems 2.3 Polythermal sections; syngenesis criterium References III. Evolution of the native lower mantle systems 3.1 Subsolidus phase relations of the lower mantle systems 3.2 Melting relations of the lower mantle periclase - wustite - stishovite - Ca-perovskite system 3.3 Mechanism of magmatic evolution at the conditions of the Earth lower mantle References IV. Evolution of the lower mantle diamond-forming system 4.1 Role of carbonate melt for diamond-forming processes 4.2 Experimental study of melting phase relations of the lower-mantle simple and multicomponent carbonate system 4.3 Experimental study of melting phase relations of the lower-mantle diamond-forming oxide-silicate-carbonate systems 4.4 Mechanism of evolution of diamond parental media at the conditions of the Earth lower mantle References V. Diamond-forming efficiency of oxide-silicate-carbonate-carbon systems at the conditions of the Earth lower mantle 5.1 Diamond-formation at melting of simple and multicomponent carbonate-carbon end-member systems 5.2 Diamond-formation at melting of multicomponent oxide-silicate-carbonate-carbon systems; syngenesis criterium 5.3 Concentration barrier of nucleation of the lower mantle diamonds; mechanism of nucleation and growth diamond crystal References VI. Model of diamond formation at conditions of the Earth lower mantle 6.1 Genetic classification of primary inclusions in lower mantle diamonds 6.2 Generalized composition diagram of the diamond-parental melts 6.3 Evolution of compositions of diamond-forming media 6.4 Application of experimental results to the development of the mantle-carbonatite concept of the genesis of diamond References