Elena Sokolova, Fernando CÁmara, Frank C. Hawthorne, Marco E. Ciriotti; 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). The Canadian Mineralogist ; 56 (1): 3–5. doi: https://doi.org/10.3749/canmin.1700062
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Zircophyllite is redefined as an astrophyllite-group mineral, ideally K2NaFe2+7Zr2(Si4O12)2O2(OH)4F (Fe2+-dominant at C7) (IMA 17-D). Zircophyllite was previously considered to be a kupletskite-group mineral of the astrophyllite supergroup (Mn2+-dominant at C7), with ideal formula K2NaMn7Zr2(Si4O12)2O2(OH)4F (IMA 15-B). The latter formula is not in agreement with that reported in the original description of zircophyllite.