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Diameter, mm (1mm - 0,039inch)

Polished stones - full range in stock "Apatite"

Apatite is a mineral with a variable content of fluorine, chlorine and OH ions. It has varieties of chlorine-apatite, fluorine-apatite and carbonate-apatite. Due to the variable composition, the common name "apatite" is the name of a supergroup of apatite. In addition to inorganic formation, apatite is also a biomineral, because it occurs in the form of microcrystals in the bones and teeth of living organisms. Apatite is called "bread stone", because. mined for the production of fertilizers.

You can see apatite stone for sale and buy it in the Minerals of Russia online store.

Physical properties of Apatite

General
Category Phosphate mineral
Formula
(repeating unit)
Ca5(PO4)3(F,Cl,OH)
IMA symbol Ap
Strunz classification 8.BN.05
Crystal system Hexagonal
Crystal class Dipyramidal (6/m) (same H-M symbol)
Space group P63/m (no. 176)
Identification
Color Transparent to translucent, usually green, less often colorless, yellow, blue to violet, pink, brown.[3]
Crystal habit Tabular, prismatic crystals, massive, compact or granular
Cleavage [0001] indistinct, [1010] indistinct
Fracture Conchoidal to uneven
Mohs scale hardness 5(defining mineral)
Luster Vitreous to subresinous
Streak White
Diaphaneity Transparent to translucent
Specific gravity 3.16–3.22
Polish luster Vitreous
Optical properties Double refractive, uniaxial negative
Refractive index 1.634–1.638 (+0.012, −0.006)
Birefringence 0.002–0.008
Pleochroism Blue stones – strong, blue and yellow to colorless. Other colors are weak to very weak.
Dispersion 0.013
Ultraviolet fluorescence Yellow stones – purplish-pink, which is stronger in long wave; blue stones – blue to light-blue in both long and short wave; green stones – greenish-yellow, which is stronger in long wave; violet stones – greenish-yellow in long wave, light-purple in short wave.
Code: 1229
Yakutia, RF
49*36*7mm

0.00 $ $86.67

Code: 921
Kovdor, Murmansk region, Kola Peninsula, RF
81*68*17mm

0.00 $ $26.67

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