Detailed sheet

wavellite

Discovered in 1805 in England, its name honors the English physician William Wavell (1750-1829).



CHEMICAL CHARACTERISTICS

Al3[PO4]2(OH,F)3 - 5(H2O)

hydrated aluminum phosphate



PHYSICAL CHARACTERISTICS

Main color

green

Other colors

white, blue, brown, yellow

Color of streak

white

Luster

greasy, pearly

Hardness

3.5 to 4.0

Density

2.36 to 0.00

Cleavage

perfect

Fracture

uneven

pearly cleavage



OPTICAL PROPERTIES

Transparency

transparent

Refractive index

1.520 - 1.560

Double refraction

0.025

definite, biaxial positive

visible double refraction

Yes

Dispersion

-

Pleochroism

weak

Number of colors

2

yellow, green

Fluorescence

none



CRYSTALS PROPERTIES

radial groups of crystals

crystals system

orthorhombic



OTHER INFORMATIONS

Exploited
sites

It is found in the Potosi mines in Bolivia, in the United States (California, Arizona, Nevada, Arkansas, New Mexico, Virginia, Pennsylvania), in Germany, Slovakia, Hungary, China.

use in jewelry

collection stone cut in facets or cabochon

Other
Gems

Venez visitez

notre site web

voillot-joaillier.fr

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