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Adamite

>> Group(s) : arsenates
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Described in 1886 by Charles Friedel who named it after the French mineralogist Gilbert Joseph Adam who found this mineral.
Its color depends on the metallic ions present : cuproadamite colored by copper is green, manganoadamite colored by manganese is pink-purple such as cobaltoadamite and aluminoadamite is blue.

Exploited sites

Historically found in Laurium, Greece. Deposits in France (Cap Garonne in Var department), in Chile, in Namibia (Tsumeb), the most beautiful ones come from Mexico (Ojuela mine, Durango).

See pictures of the mines / other pictures

Use in jewelry

gemstone for collectors, faceted.

Looking alike stones

apatite , aragonite , calcite , dolomite , fluorite , magnesite , smithsonite

Historical healing properties

This would be the stone of the throat chakra, also called energetical centre, link betwen the body and mind. The Adamite would promote the energy exchange both between the different organs and with the external. It would help in establishing and maintaining a good communication with friends and relatives.

Chemical characteristics
Zn2[AsO4](OH)

zinc arsenate

Physical characteristics

Main color : yellow

Other colors : white, blue, brown, colourless, pink, green, purple

its color is due to the metallic ions present.

Color of streak : white

Luster : vitreous

Hardness : 3.5

Density : 4.30 to 4.70

Cleavage : good

Fracture : conchoidal, uneven

Optical properties

Transparency : transparent, translucent

Refractive Index : 1.710 - 1.760

Double refraction : 0.050

Definite, biaxial (+/-)

visible double refraction : yes

Dispersion : ++

Pleochroism : weak

Number of colors : 3

Light shades depending on the color, only 2 easily visible.

Fluorescence : moderate

The yellow and green varieties are fluorescent in green or yellow

Crystals

Tabular crystals and radiating brillant spheroidal aggregates.

cristaux

Crystal system : orthorhombic

Other informations
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