This website uses cookies so that we can provide you with the best user experience possible. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful.
Zircon
Group of silicates - mesosilicates
Formule chimique :
Zr(SiO4)
Système cristallin :
Quadratic
Etymologie :
From the Arabic Zarqun.
Dureté :
7.5
Densité :
4.6 – 4.7
Propriétés physiques :
Vitreous to adamantine sheen. Colorless, yellow, red to brown. Transparent to translucent. Poor cleavage (110). Conchoidal fracture.
Propriétés chimiques :
frequent orange to yellow fluorescence.
Formule chimique :
Zr(SiO4)
Habitus :
Often in prisms (square section) with pyramidal terminations.
Gîtologie :
Zircon is found in granitic bodies and pegmatites as well as in alluvial deposits.
Determination :
difficult except when the prismatic crystal habitus is visible.
Utilisation :
in jewelry
Zircon is a very common mineral. Beautiful crystals come from Sardinia (Monteveccio), Austria (Pfitsch), Norway (Kragero), Russia (Miask), India (Orissa), Australia and Nigeria. Gem zircons are mostly from Thailand, Cambodia and Ceylon.
In France, zircon has been described in alluvium at Espaly (Haute Loire).
(No Ratings Yet)
Loading...
Leave a Reply