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Structural transformations of minerals in deep geospheres: A review

机译：深部地球圈中矿物的结构转变：回顾

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The structure and composition of inner geospheres are considered in light of new data on the structural transformations of minerals under high pressure. More than 100 tetrahedral complexes in silicates of the Earth's crust give way to no more than 20 structural types of minerals of this class in the Earth's mantle. The main difference in their structures is associated with the transformation of Si tetrahedra into Si octahedra. New data on the structural transformations of minerals in deep geospheres indicate that the mineralogical diversity of the Earth's crust is substantially richer than that of deep geospheres; however, mantle mineralogy is not as primitive as was supposed even twenty or thirty years ago. The results of recent seismological investigations and quantum-mechanical calculations allow the assumption that there exists a new previously unknown phase transformation under the conditions in the Earth's inner core.
机译：根据有关高压下矿物结构转变的新数据，研究了内部地圈的结构和组成。地壳硅酸盐中的100多种四面体络合物让位于地幔中的这类矿物的结构类型不超过20种。它们结构的主要差异与Si四面体向Si八面体的转变有关。关于深部地球层中矿物结构变化的新数据表明，地壳的矿物学多样性比深部地球层丰富得多。然而，地幔矿物学并不像二十或三十年前那样原始。最近的地震学调查和量子力学计算的结果可以假设在地球内核的条件下存在一个以前未知的新相变。

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