Muséum national d'histoire naturelle _ The species

FROM : Kapyldzhyk mineral deposit, Nakhichevan, Azerbaijan
SIZE : 12 x 8 cm; Crystal 4 x 2.4 cm

This sample has dark crystals of rutile on a matrix of white quartz. There are redish reflections on the crystals of rutile. The bigger crystal is 4 x 2.4 cm. The whole sample measures 12 x 8 cm.

It comes from the mineral deposit of Kapyldzhyk in Azerbaijan. Acquired thanks to support from Total, it is currently exposed in the Treasure Room, within the Gallery of Mineralogy of the Muséum national d’Histoire naturelle.

Photography: Louis-Dominique Bayle, © MNHN.

SPECIE : Rutile

HISTORY : Name derived from Latin "rutilus" meaning red, in reference to its color

Species first described in 1803 by Abraham Gottlob Werner (1749-1817), German geologist (Bergwerk Academy, Freiberg, Germany)

Type-locality: Cajuelo, Burgos, Spain

CHEMICAL FORMULA : TiO2
CRYSTAL SYSTEM : Tetragonal
COLOR : Red, brown, reddish black, violet, blue
DIAPHANIETY : Opaque
LUSTER : Adamantine to sub-metallic
STREAK : Pale brown to gray
MORPHOLOGY : Prismatic crystals, elongated and striated
HARDNESS : 6,0-6,5
DENSITY : 4,25

CHEMICAL CLASS : IV - Oxides, hydroxides
GROUP : Rutile
STRUNZ CLASS BEFORE 2001 : 4/D.02-10
STRUNZ CLASS AFTER 2001 : 4.DB.05

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Rutile

Rutile

MNHN N°199.210

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