monazite
monazite baguette cut
Detailed sheet
monazite
Its name comes from the Greek, meaning “alone”, because its crystals are found isolated on the rock or some other mineral, and plus it is a rare mineral.
This mineral contains thorium and is naturally radioactive.
CHEMICAL CHARACTERISTICS
(Ce,La,Nd,Th)[PO4]
rare earth phosphate
PHYSICAL CHARACTERISTICS
Main color
orange
Other colors
white, brown, yellow, pink, purple
Color of streak
white, grey
Luster
resinous
Hardness
5.0 to 5.5
Density
5.00 to 5.45
Cleavage
indistinct
Fracture
conchoidal
OPTICAL PROPERTIES
Transparency
translucent, transparent
Refractive index
1.775 - 1.870
Double refraction
0.050
strong biaxial (+)
visible double refraction
Yes
Dispersion
+/-
Pleochroism
very weak
Number of colors
2
colorless, yellow - orange
Fluorescence
none
CRYSTALS PROPERTIES
prismatic tabular wedge - shaped
crystals system
monoclinic
OTHER INFORMATIONS
APPROACHING GEMS
Exploited
sites
It is found worldwide, it is a thorium ore. Found in Burundi, Nigeria, Zambia, Madagascan, Bolivia, Brazil, the United States, Europe, Russia, China …
use in jewelry
radioactive, it is cut in facets for collection
Daily care
and precautions
Radioactive, to keep away from living beings and stored in a suitable packaging.
Other
Gems
Venez visitez
notre site web
voillot-joaillier.fr
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