coupled substitution

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coupled substitution

chemistry

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mineral
Compositional variation
…such as this are termed coupled substitutions. The plagioclase feldspar series exhibits complete solid solution, in the form of coupled substitutions, between its two end-members, albite (NaAlSi₃O₈) and anorthite (CaAl₂Si₂O₈). Every atomic substitution of Na⁺ by Ca²⁺ is accompanied by the replacement of a
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…such as this are termed coupled substitutions. The plagioclase feldspar series exhibits complete solid solution, in the form of coupled substitutions, between its two end-members, albite (NaAlSi₃O₈) and anorthite (CaAl₂Si₂O₈). Every atomic substitution of Na⁺ by Ca²⁺ is accompanied by the replacement of a
Read More