Detailed sheet

ussingite

Discovered in 1914, its name honors the Danish mineralogist Niels Viggo Ussing (1864-1911)



CHEMICAL CHARACTERISTICS

Na2Al [Si3O8](OH)

sodium alumino-silicate



PHYSICAL CHARACTERISTICS

Main color

purple

Other colors

white, pink, red

Color of streak

white

Luster

vitreous

Hardness

6.0 to 7.0

Density

2.46 to 2.50

Cleavage

good

Fracture

uneven



OPTICAL PROPERTIES

Transparency

translucent

Refractive index

1.510 - 1.550

Double refraction

0.040

definite, biaxial positive

visible double refraction

Yes

Pleochroism

absent

Number of colors

1

Fluorescence

strong

colors vary, but often green or orange



CRYSTALS PROPERTIES

very rare and small

crystals system

triclinic



OTHER INFORMATIONS

Exploited
sites

It is found in Russia in the Kola peninsula, in Greenland, Canada at Mont St-Hilaire.

use in jewelry

it is cut either in cabochons or faceted, it is of a beautiful pink with a beautiful fluorescence.

Historical
healing properties

It suits the higher chakras and promote creativity, intuition, inspiration.

Other
Gems

Venez visitez

notre site web

voillot-joaillier.fr

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