Richiedi una copia del documento: Redefinition of zircophyllite, ideally K2NaMn7Zr2(Si4O12)2O2(OH)4F, a kupletskite-group mineral of the astrophyllite supergroup (in accord with IMA 15-B) as an astrophyllite-group mineral, ideally K2NaFe2+7Zr2(Si4O12)2O2(OH)4F (IMA 17-D)

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