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

Brochantite mineral - You can buy these samples

Brochantite - a secondary mineral of copper, formed in oxidation zones in hot and dry climates. It occurs in the form of small needle (sometimes tabular) crystals or fibrous streaks. Discovered in the Urals in 1824.

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

Physical properties of Brochantite

Category Sulfate minerals
(repeating unit)
IMA symbol Bct
Strunz classification 7.BB.25
Crystal system Monoclinic
Crystal class Prismatic (2/m)
(same H-M symbol)
Space group P21/a
Color Green, emerald green, or black
Crystal habit Prismatic crystals; acicular needle-like crystals; druse
Cleavage Perfect [100]
Fracture Conchoidal - brittle
Mohs scale hardness 3.5 - 4.0
Luster Vitreous - pearly
Streak Pale green
Diaphaneity Transparent to translucent
Specific gravity 3.97
Optical properties Biaxial (-), 2V measured: 72°
Refractive index nα = 1.728 nβ = 1.771 nγ = 1.800
Birefringence δ = 0.072
Pleochroism Weak
Code: 2479
Kamenushinsky deposit, Kemerovo region, South Siberia, RF

0.00 $ $31.67

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