carletonite
Detailed sheet
carletonite
Discovered at Mont Saint-Hilaire in Canada by a team of the Carlton University in Ottawa, it was named after it.
CHEMICAL CHARACTERISTICS
KNa4Ca4Si8O18(CO3)4(OH,F) (H2O)
complex phyllosilicate
PHYSICAL CHARACTERISTICS
Main color
blue
Other colors
pink
very bright blue color
Color of streak
white
Luster
vitreous
Hardness
4.0 to 4.5
Density
2.50 to 0.00
Cleavage
perfect
Fracture
conchoidal
OPTICAL PROPERTIES
Transparency
translucent, transparent
Refractive index
1.517 - 1.521
Double refraction
0.004
weak negative uniaxial
visible double refraction
No
Pleochroism
absent
Number of colors
1
blue carletonite spectrum system
Fluorescence
none
CRYSTALS PROPERTIES
massive well shaped
crystals system
tetragonal
OTHER INFORMATIONS
APPROACHING GEMS
Exploited
sites
Very rare it is currently only found in the deposit in Canada.
use in jewelry
faceted, it’s a rare collection stone
Other
Gems
Venez visitez
notre site web
voillot-joaillier.fr
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