eosphorite
eosphorite pink crystals with termination in childrenite from Linopolis in Minas Gerais in Brazil
yellow eosphorite cut in facets
parallel growth tubes and cleavage fault inclusions type
Detailed sheet
eosphorite
Its name comes from the Greek, defining the pink color at the arrival of dawn.
Its chemical formula is very close to the childrenite, which is yellow-brown because iron dominates, while for éosphorite it is manganese which dominates and gives the pink color.
CHEMICAL CHARACTERISTICS
(Mn,Fe)Al[PO4](OH)2 - H2O
hidrated manganese and aluminium phosphate mineral
PHYSICAL CHARACTERISTICS
Main color
pink
Other colors
brown, colourless, yellow
it becomes brown by being oxidized.
Color of streak
white
Luster
resinous, vitreous
Hardness
5.0 to 0.0
Density
3.05 to 3.08
Cleavage
indistinct
Fracture
conchoidal
OPTICAL PROPERTIES
Transparency
translucent, transparent
Refractive index
1.630 - 1.670
Double refraction
0.028
definite, biaxial (-)
visible double refraction
Yes
Dispersion
++
Pleochroism
definite
Number of colors
3
yellow, pink, light pink or colorless
Absorption spectrum
410
for the pink- brown
orange eosphorite spectrum system
Fluorescence
none
CRYSTALS PROPERTIES
prismatic
crystals system
orthorhombic
OTHER INFORMATIONS
APPROACHING GEMS
Exploited
sites
It is found in Rwanda, Argentina, Brazil (Minas Gerais), Australia, Afghanistan (Nuristan), Pakistan (Skardu), Sweden, the United States, in the Kola Peninsula (Russia).
use in jewelry
it is cut in facets. It is a collection stone
Other
Gems
Venez visitez
notre site web
voillot-joaillier.fr
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