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Ferronigerite-2N1S: (Zn,Mg,Fe++)(Sn,Zn)2(Al,Fe+++)12O22(OH)2
Comments: Hexagonal crystal of ferronigerite-2N1S with an inset back-light image showing the deep brown tranparency. Location: Stiepelmann Mine, Arandis, Swakopmund District, Erongo Region, Namibia. Scale: Crystal Size 1.0 x 0.8 x 0.1 cm. © Rob Lavinsky