## Structural and Magnetic Phase Transitions in MineralsThis volume in Advances in Physical Geochemistry presents the latest synthesis of theory and experimental data pertaining to structural and magnetic phase transitions in a variety of geochemically important minerals. The book is the first to cover the impact of this rapidly progressing area of solid state physics in earth sciences and reflects its growing significance for mineralogy and petrology. |

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Page 107

However , by using theoretical

possible to compute reference profiles of the ... The

seismic parameter of models with 10 % Fe are shown for pressures of 30 and

100 GPa in Fig .

However , by using theoretical

**estimates**in place of the missing data , it ispossible to compute reference profiles of the ... The

**estimated**density andseismic parameter of models with 10 % Fe are shown for pressures of 30 and

100 GPa in Fig .

Page 123

This gives dSvib = Coy d In V or , on integration , ASvib = Cy In ( V / V ) Hence ,

we can

calculated by using the

This gives dSvib = Coy d In V or , on integration , ASvib = Cy In ( V / V ) Hence ,

we can

**estimate**the vibrational entropy ... The temperature at a given depth iscalculated by using the

**estimated**temperature and density at the core - mantle ...Page 219

This procedure was continued until the crystal had transformed . The amount of

transformed material was

intensities of the characteristic 12R reflections with those of the basic 2H

reflections .

This procedure was continued until the crystal had transformed . The amount of

transformed material was

**estimated**after each experiment by comparing theintensities of the characteristic 12R reflections with those of the basic 2H

reflections .

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### Contents

Preface | 1 |

Incommensurate Phase Transitions in Quartz and Berlinite | 17 |

Phase Separation in Quadrilateral Pyroxenes and Olivines | 39 |

Copyright | |

8 other sections not shown

### Other editions - View all

Structural and Magnetic Phase Transitions in Minerals S. Ghose,J.M.D. Coey,E. Salje Limited preview - 2012 |

Structural and Magnetic Phase Transitions in Minerals S. Ghose,J.M.D. Coey,E. Salje Snippet view - 1988 |

### Common terms and phrases

antiferromagnetic appears applied approximation atoms axis Ballet behavior bond calculated cation Chem chemical cluster Coey components composition constant corresponding coupling critical crystal decreases density dependence described determined diffraction direction disordered Dolino effect electron energy equilibrium estimated et al exchange experimental experiments Fe2+ Fe3+ ferromagnetic field function Ghose give given heat ilvaite inc phase increases indicate interactions ions iron lattice layers Lindsley lower mantle magnetic magnetic order materials measurements Mineral mode Mössbauer natural neutron observed obtained occur octahedral olivines order parameter pairs perovskite phase diagrams phase transition Phys physical pigeonite polytypes positions possible potential predicted pressure properties pyroxenes quartz range respectively Salje sample shown shows silicates solid solution space group spin stability strain structure symmetry Table temperature theory thermodynamic tion transformation unit variation