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Hematite: Fe2O3 Rutile: TiO2
Comments: Acicular, golden yellow crystals of rutile epitaxially overgrown on black crystals of hematite. The overgrowths are perpendicular to the trigonal crystallography of the hematite. Location: Novo Horizonte, Bahia Brazil. Scale: 4 x 3.5 x 3 cm. © Fabre Minerals
Hematite: Fe2O3
Comments: Black, platy hematite and minor white magnesite. Location: Brumado, Bahia, Brazil. Scale: 9 x 4.5 cm. © Fabre Minerals
Hematite: Fe2O3 Defernite: Ca6(CO3)2-x(SiO4)x(OH)7(Cl,OH)1-2x (x=0,5)
Comments: Specular hematite rich with crystalline grains of reddish brown defernite. Location: Kombat Mine, Kombat, Grootfontein District, Otjozondjupa Region, Namibia. Scale: 3.9 x 2.5 cm. © John Veevaert