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Rutile: TiO2 Hematite: Fe2O3
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
Rutile: TiO2 Pyrophyllite: Al2Si4O10(OH)2
Comments: Rutile on fine-grained pyrophyllite. Location: Graves Mt. Georgia, USA. Scale: 4.5 x 5 cm. © Fabre Minerals
Rynersonite: Ca(Ta,Nb)2O6
Comments: Off-white fibrous rynersonite. Location: Brown Derby No. 1 Mine, Gunnison County, Colorado, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Rynersonite: Ca(Ta,Nb)2O6 Schiavinatoite: (Nb,Ta)BO4
Comments: Brown, columnar schiavinatoite with minor white rynersonite sticks on quartz. Location: Ampanodiana Sud, Tetezantsio, Mahaiza, Antananarivo, Madagascar. Scale: See Image. © Jeff Weissman / Photographic Guide to Mineral Species