xenotime
xenotime crystal from Norway
xenotime crystal from Norway
Detailed sheet
xenotime
Identified by Berzelius its name is related to the Greek word “xenos”, meaning stranger, because the crystals were not discovered until later and it was long called Cenotime.
It forms a series with the chernovite and is a rare earth phosphate, more often Yttrium but there is also a kind with ytterbium.
CHEMICAL CHARACTERISTICS
(Y,Yb )PO4
Yttrium-Ytterbium phosphate
PHYSICAL CHARACTERISTICS
Main color
yellow
Other colors
brown, colourless, green
mainly in the yellow - browns
Color of streak
brown, yellow
Luster
resinous, vitreous
Hardness
4.0 to 5.0
Density
4.40 to 5.10
Cleavage
indistinct
Fracture
uneven
OPTICAL PROPERTIES
Transparency
translucent, transparent
sometimes opaque
Refractive index
1.710 - 1.830
Double refraction
0.085
uniaxial positive
visible double refraction
Yes
Dispersion
+
Pleochroism
definite
Number of colors
2
light shade yellow-brown to greenish
Fluorescence
none
Inclusions
often included with other microcrystals
CRYSTALS PROPERTIES
primatiques often biterminal and well shaped
crystals system
tetragonal
OTHER INFORMATIONS
APPROACHING GEMS
Exploited
sites
It is found in many pegmatites and worldwide: Brazil, United States, Canada, Australia, Madagascar, Mozambique, Namibia, Slovakia, Germany, Russia, Sweden, Norway , China.
use in jewelry
its a very fragile collection stone
Other
Gems
Venez visitez
notre site web
voillot-joaillier.fr
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