Detailed sheet

anhydrite

Identified by Werner in 1804, its name comes from the Greek “anhydros” which means without water, as opposed to gypsum, which contains it.
A blue variety that comes from Peru is called Angelite.
Another variety from Italy (Costa Volpino in Lombardy) is called vulpinite.



CHEMICAL CHARACTERISTICS

Ca[SO4]

calcium sulfate



PHYSICAL CHARACTERISTICS

Main color

colourless

Other colors

white, blue, brown, grey, yellow, black, pink, red

Color of streak

white, grey

Luster

pearly, vitreous

Hardness

3.5 to 0.0

Density

2.90 to 2.99

Cleavage

perfect

Fracture

uneven

pearly on the cleavage



OPTICAL PROPERTIES

Transparency

translucent, transparent

Refractive index

1.570 - 1.615

Double refraction

0.040

definite, biaxial (+)

visible double refraction

Yes

Dispersion

0.013

Pleochroism

definite

Number of colors

3

colorless, yellow, pink, purple

Fluorescence

variable

some samples may show a red fluorescence



CRYSTALS PROPERTIES

prismatic, often in compact aggregates

crystals system

orthorhombic



OTHER INFORMATIONS

Exploited
sites

It is common and present in many deposits.
It is found in the Alps, Tyrol in Austria and France (Tarentaise valley in Bourg-Saint-Maurice), Canada, Germany, Hungary, the United States (California, Colorado …), Bolivia, Peru, Zaire, Namibia.

use in jewelry

Collection stone of low hardness and acid sensitive.

Historical
healing properties

On the throat chakra, it will soften it locally, but it’s for its energy action that is described: it would facilitate creative ideas among artists. It would also limit the impulsive reactions by providing smoothness and quietness. Its other name, the Angelite, suggests the soothing action she would have like the guardian angel of our life, his presence would reassure young children. It would protect from negative energies, would help to overcome challenges.

Other
Gems

Venez visitez

notre site web

voillot-joaillier.fr

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