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 (Mn2þ-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.
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) / E. Sokolova, F. Cámara, F.C. Hawthorne, M.E. Ciriotti. - In: CANADIAN MINERALOGIST. - ISSN 0008-4476. - 56:1(2018 Jan), pp. 3-5. [10.3749/canmin.1700062]
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)
F. CámaraSecondo
Writing – Review & Editing
;
2018
Abstract
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 (Mn2þ-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.File | Dimensione | Formato | |
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