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

Polished stones - full range in stock "Pyrite"

Pyrite - translated from Greek as "a stone that strikes fire", because. has the property of sparking. Used as a replacement for flint in flintlock guns. Other names are sulfur or iron pyrites.

Forms cubic, pentagondodecahedral, cuboctahedral, octahedral (the rarest) crystals. Crystals can be both with shading on the edges (for example, the Berezovsky deposit, the Urals), and absolutely smooth (Navakhun, Spain).

Outwardly, it resembles gold, accompanying it in deposits, which is why pyrite was often confused with it during mining. Because of this, it was called "fool's gold". Pyrite is widely distributed. In Russia, its deposits are in the Urals, Altai, the Caucasus, in Komi, in the Voronezh region.

Pyrite crystals are used in the simplest detector radios as a diode, using the property of the pyrite-metal pair to pass current mainly in one direction. Previously, pyrite was used as mirrors, for which it was polished to a shine.

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

Physical properties of Pyrite

Category Sulfide mineral
(repeating unit)
IMA symbol Py
Strunz classification 2.EB.05a
Dana classification
Crystal system Cubic
Crystal class Diploidal (m3)
H-M symbol: (2/m 3)
Space group Pa3
Unit cell a = 5.417 Å, Z = 4
Formula mass 119.98 g/mol
Color Pale brass-yellow reflective; tarnishes darker and iridescent
Crystal habit Cubic, faces may be striated, but also frequently octahedral and pyritohedral. Often inter-grown, massive, radiated, granular, globular, and stalactitic.
Twinning Penetration and contact twinning
Cleavage Indistinct on {001}; partings on {011} and {111}
Fracture Very uneven, sometimes conchoidal
Tenacity Brittle
Mohs scale hardness 6–6.5
Luster Metallic, glistening
Streak Greenish-black to brownish-black
Diaphaneity Opaque
Specific gravity 4.95–5.10
Density 4.8–5 g/cm3
Fusibility 2.5–3 to a magnetic globule
Solubility Insoluble in water
Other characteristics paramagnetic
Code: 2236
Ermakovskoe deposit, Buryatia, RF

0.00 $ $29.09

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