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(Fe,Mn,Pb)O,TiO₂, cf. Ilmenite. TiO₂ = 49-52%.

Rhombohedral; isomorphous with Ilmenite, Geikielite, etc.

G = 5·3 (to 4·2 when weathered). H = 6¹⁄₂. Black.

Diamantina, Minas Geraes, Brazil.