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4 Aluminum and Aluminate
ОглавлениеCharacterization of the structural roles of Al3+ in aluminosilicate compositions is central to understanding their properties. The role of Al3+ can vary from simple substitution for Si4+ in the network of interconnected aluminosilicate tetrahedra to more complex environments where Al, Si substitution is restricted to only some of the Q n ‐species. The latter feature is important because most chemically complex compositions are depolymerized (NBO/T > 0) so that multiple Q n ‐species will coexist.