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

Stone sphere balls - full range in stock "Malachite"

Malachite is a copper mineral of surface oxidation zones of hydrothermal deposits. It occurs mainly in the form of sinter masses of a zonal structure, which gives it a decorative appearance. But it also occurs as pseudostalactites, spherulites and acicular crystals. Once upon a time there were large reserves of malachite in the Urals, but they have all been depleted a long time ago. Currently, the largest reserves of malachite are in Africa. Compared to Russian malachite, African malachite is darker. Malachite is quite common, but it rarely forms large masses.

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

Physical properties of Malachite

Category Carbonate mineral
(repeating unit)
IMA symbol Mlc
Strunz classification 5.BA.10
Crystal system Monoclinic
Crystal class Prismatic (2/m)
(same H-M symbol)
Space group P21/a
Formula mass 221.1 g/mol
Color Bright green, dark green, blackish green, with crystals deeper shades of green, even very dark to nearly black commonly banded in masses; green to yellowish green in transmitted light
Crystal habit Massive, botryoidal, stalactitic, crystals are acicular to tabular prismatic
Twinning Common as contact or penetration twins on {100} and {201}. Polysynthetic twinning also present.
Cleavage Perfect on {201} fair on {010}
Fracture Subconchoidal to uneven
Mohs scale hardness 3.5–4
Luster Adamantine to vitreous; silky if fibrous; dull to earthy if massive
Streak light green
Diaphaneity Translucent to opaque
Specific gravity 3.6–4
Optical properties Biaxial (–)
Refractive index nα = 1.655 nβ = 1.875 nγ = 1.909
Birefringence δ = 0.254
Code: 3939
Stepnoe, Altai, RF

0.00 $ $480.00

Code: 3940
Stepnoe, Altai, RF

0.00 $ $123.33

Code: 4723
Stepnoe, Altai, RF

0.00 $ $72.00

Code: 4158
Stepnoe, Altai, RF

0.00 $ $116.67

Code: 3942
Stepnoe, Altai, RF

0.00 $ $116.67

Code: 1841
Stepnoe, Altai, RF

0.00 $ $465.00

Code: 2280
Stepnoe, Altai, RF

0.00 $ $196.67

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