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

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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