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Titanowodginite: (Mn++,Fe++)(Ti,Sn)(Ta,Nb)2O8
Comments: Black crystals of titanowodginite in matrix. Location: Tanco Mine (Bernic Lake Mine), Bernic Lake, Lac-du-Bonnet area, Manitoba, Canada. Scale: Picture size 4 mm. © Thomas Witzke / Abraxas-Verlag