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Quartz

MNHN N°207.19

visu_502 infos

FROM : Saint-Lary, Ariège, France
SIZE : 3.5 x 3 x 2.5 cm

general description

Under this inventory number two quatrz samples are classified. This sample showed here, is composed of a multitude of hyaline quartz crystals, perfectly terminated and very lustrous.

This sample comes from Saint-Lary locality, Ariège in France. The Muséum national d’Histoire naturelle could obtain this specimen thanks to support from Total.

It is kept in the storage rooms of the collections of the Muséum (i.e., not yet displayed to the public).

Photography: A. Dahmane / Photo Saint-Hilaire, © MNHN.

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The Species page

Identity card

SPECIE : Quartz

HISTORY : Name inspired by "quarz", old german word "querch" meaning dwarf

Species known since Prehistory

Type-locality: undefined because species already known by the Ancients

CHEMICAL FORMULA : SiO2
CRYSTAL SYSTEM : Rhomboedric
COLOR : Colourless, white, pink, violet, black, yellow
DIAPHANIETY : Transparent to opaque
LUSTER : Vitreous to greasy
STREAK : White
MORPHOLOGY : Prismatic crystals, massive, forming aggregates
HARDNESS : 7
DENSITY : 2,66

CHEMICAL CLASS : IV - Oxydes, hydroxydes
GROUP : Quartz
STRUNZ CLASS BEFORE 2001 : 4/D.01-10
STRUNZ CLASS AFTER 2001 : 4.DA.05

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