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Romanite: (Fe++,U,Pb)2(Ti,Fe+++)O4
Comments: Black, massive coarse-grained aggregate of romanite from amphibolites and its radioactivity is 335 µR/h. Location: Dzhigda U ore occurrence, Dambuki ore cluster, Amurskaya Oblast', Far-Eastern Region, Russia. Scale: Specimen Size 3x2x1.8 cm. © Pavel M. Kartashov