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Amazonite

>> Group(s) : feldspars, silicates
See the pictures :

This is a perthite, variety of feldspar, so called because discovered in the Amazon, but not near the Amazon River.
It is part of the family of microclines.
The name microcline comes from the Greek "small slope" has been given by Breithaupt in 1830 in reference to its crystallization in the triclinic system.
It was long believed that its color was due to copper but today we know that its color is due to lead. The largest known crystal weighing 700 kg is exposed to the Natural History Museum in Paris.

Exploited sites

It is found in the United States (Colorado), Brazil (Mine of Santa Maria de Itabira), Canada, India, Burma, Kenya, Madagascar, Namibia, Russia (a very strong colored and with broader albite lamellae samples are found in museums all over the world), Austria (Styria).

See pictures of the mines / other pictures

Use in jewelry

It is popular in jewelry and for decoration because of the intensity of his tone light green to green-turquoise.
It is cut in different shapes : slabs, cabochons, ashtrays, bowls, small animals. At the Louvre Museum in Paris, we find a beautiful mirror handle of Egyptian amazonite.

Daily care and precautions

Easy to maintain, however, attention to the cleavage.

Looking alike stones

jade , serpentine , turquoise , variscite

Historical healing properties

Close to the turquoise, amazonite would possess a greater tendency to tenderness because of its pale green.
It would put in a serene and joyful mood. On the Heart Chakra, it would provide a sense of affection for a loved one with each other. On the throat chakra, it would immediately trigger tenderness, gentleness and encourage love relations .
It would also enhance the vitality and promote independence.

Imitations and treatments

We do not know of synthetic amazonite to date. Some were heat treated at 300 ° C to improve its color.

Chemical characteristics
K[AlSi3O8]

potassium aluminum silicate

Physical characteristics

Main color : green

Other colors : blue

green to bluish green with silvery white veins of albite almost parallel.

Color of streak : white

Luster : vitreous, pearly

Hardness : 6.0 to 6.1

Density : 2.56 to 2.58

Cleavage : perfect

Fracture : uneven

perfect cleavage, pearly surface, easy according to two directions and so it tends to leaf removal.

Optical properties

Transparency : translucent, opaque

opaque to translucent and rarely transparent. Its luster is vitreous.

Refractive Index : 1.522 - 1.530

Double refraction : 0.008

Very weak, biaxial (+)

visible double refraction : no

Dispersion : 0.018 (0.011)

Pleochroism : absent

Number of colors : 1

In fine streaks. very light pleochroism

Fluorescence : weak

Olive - green, slightly orange on white albite streaks

Crystals

Triclinic, prismatic and sometimes squat prismatic biterminal or twinned crystals

cristaux

Crystal system : triclinic

Other informations

Astrological sign : Taurus, Gemini, Capricorn

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Correspondance
astrological
  • Taurus Taurus
  • Gemini Gemini
  • Capricorn Capricorn

It is soothing, eliminates anxiety for its associated signs.