The dufrénite group includes:
bimbowrieite:
NaMgFe3+5(PO4)4(OH)6.2H2O
burangaite:
NaFe2+Al5(PO4)4(OH)6.2H2O
dufrénite:
Ca0.5Fe2+Fe3+5(PO4)4(OH)6.2H2O
matioliite:
NaMgAl5(PO4)4(OH)6.2H2O
natrodufrénite:
NaFe2+Fe3+5(PO4)4(OH)6.2H2O
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