Nigerite group

nigerite

zinconigerite-2N1S

zinconigerite-6N6S

ferronigerite-2N1S

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Members of the nigerite group are:
Ferronigerite-2N1S (Al,Fe,Zn)2(Al,Sn)6O11(OH)
Ferronigerite-6N6S (Al,Fe,Zn)3(Al,Sn,Fe)8O15(OH)
Magnesionigerite-2N1S (Mg,Al,Zn)2(Al,Sn)6O11(OH)
Magnesionigerite-6N6S (Mg,Al,Zn)3(Al,Sn,Fe)8O15(OH)
Zinconigerite-2N1S (Zn,Al,Mg)2(Al,Sn)6O11(OH)
Zinconigerite-6N6S Zn3Sn2Al16O30(OH)2

They are all hydroxide minerals.

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