The arthurite group includes:
arthurite:
CuFe3+2(AsO4)2(OH)2.4H2O
cobaltarthurite:
CoFe3+2(AsO4)2(OH)2.4H2O
earlshannonite:
Mn2+Fe3+2(PO4)2(OH)2.4H2O
ojuelaite:
ZnFe3+2(AsO4)2(OH)2.4H2O
whitmoreite:
Fe2+Fe3+2(PO4)2(OH)2.4H2O
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