The astrophyllite group includes:
astrophyllite:
K2NaFe2+7Ti2Si8O26(OH)4F
niobophyllite:
K2NaFe2+7(Nb,Ti)2(Si4O12)2O2(OH)4(O,F)
zircophyllite:
K2NaFe2+7Zr2(Si4O12)2O2(OH)4F
The astrophyllite group is a member of the
astrophyllite supergroup
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