triplite
triplite from Australia
Detailed sheet
triplite
Its name comes from the Greek “triplos” for triple, as it has cleavages in three directions, it forms a series with the zwieselite, which is the fluorinated pole.
It is found in granitic pegmatites and it was identified in the Chanteloube, Haute-Vienne in France.
The gem forms are rare and come mainly from Pakistan.
CHEMICAL CHARACTERISTICS
(Mn,Fe)2[PO4](F,OH)
iron and manganese phosphate
PHYSICAL CHARACTERISTICS
Main color
brown
Other colors
black, orange
orange-brown to reddish, black in its oxidized form
Color of streak
white, brown
Luster
greasy, resinous, vitreous
Hardness
5.0 to 5.5
Density
3.50 to 3.95
Cleavage
good
Fracture
uneven
easy cleavage
OPTICAL PROPERTIES
Transparency
opaque, translucent, transparent
transparent varieties are rare
Refractive index
1.650 - 1.680
Double refraction
0.026
definite, biaxial (+)
visible double refraction
Yes
Dispersion
+
Pleochroism
definite
Number of colors
2
shades from brown yellow to red
Fluorescence
none
CRYSTALS PROPERTIES
prismatic
crystals system
monoclinic
OTHER INFORMATIONS
APPROACHING GEMS
Exploited
sites
It is found in Pakistan in the Shigar Valley, in Argentina, Bolivia, Brazil, Australia (Tasmania, New South Wales), in Europe: Germany, Austria, Czech Republic, Portugal, Italy in Tuscany, Sweden, Finland, Cornwall, England … Russia, the United States (Arizona, California, Colorado, Maine ….), Madagascar, Namibia, Mozambique.
use in jewelry
collection stone which is cut faceted when of gem quality and of a nice orange color
Daily care
and precautions
Fragile by its softness and it cleaves easily.
Other
Gems
Venez visitez
notre site web
voillot-joaillier.fr
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