The bjarebyite group includes:
bjarebyite:
BaMn2+2Al2(PO4)3(OH)3
kulanite:
BaFe2+2Al2(PO4)3(OH)3
penikisite:
BaMg2Al2(PO4)3(OH)3
perloffite:
BaMn2+2Fe3+2(PO4)3(OH)3
plumboperloffite:
PbMn2+2Fe3+2(PO4)3(OH)3
strontioperloffite:
SrMn2+2Fe3+2(PO4)3(OH)3
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