parisite
parisite crystal from Muzo in Colombia
Detailed sheet
parisite
it was named in honor of J.J.Paris, owner of an emerald mine in Muzo in Colombia, where it was discovered.
CHEMICAL CHARACTERISTICS
Ca(Ce,La)2[CO3]3 F2
rare earth carbonate and calcium
PHYSICAL CHARACTERISTICS
Main color
yellow
Other colors
brown, grey, orange
Color of streak
white, yellow
Luster
greasy, resinous, vitreous
Hardness
4.5 to 0.0
Density
4.32 to 4.44
Cleavage
perfect
Fracture
splintery, uneven
OPTICAL PROPERTIES
Transparency
translucent
Refractive index
1.670 - 1.775
Double refraction
0.080
weak uniaxial positive
visible double refraction
No
Dispersion
-
Pleochroism
weak
Number of colors
2
light yellow, dark yellow
Fluorescence
none
CRYSTALS PROPERTIES
dipyramids, prisms
crystals system
hexagonal
OTHER INFORMATIONS
APPROACHING GEMS
Exploited
sites
It is also found in Greenland, Sweden, Slovakia, Brazil, USA, South Africa, Namibia, Angola.
use in jewelry
a collection stone, it is cut in facets but it is only translucent
Other
Gems
Venez visitez
notre site web
voillot-joaillier.fr
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