The crystals of Rutile have grown epitaxially on tabular ...
Description: The crystals of Rutile have grown epitaxially on tabular Hematite. Novo Horizonte, Bahía, Brazil. Mined in February 2004 Specimen size: 2.8 × 2.4 × 0.2 cm. Photo: Reference Specimens ( http://www.fabreminerals.com/specimens/RSBR-brazil-notable-specimens.php#EJ26F4 )