Minerals

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General Information

Azurite

In earlier times, azurite was being used as a pigment because of its blue colour, which was also the origin of its name. The Persian word 'lazhward' means bleu ('azure' is also derived from it) and the Italians used to call it 'Azurro Della Magna'.[1]

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Chemical & Physical Information

Trivial NameAzurite
Chemical NameCopper Carbonate
Chemical FormulaCu3(CO3)2(OH)2
Density3,83 g·cm-3
Molar mass?
Hardness3,5-4
Crytal systemMonoclinic
Unit cell?
Crystal habitPrismatic
FractureRough
CleavagePerfect [011], moderate [100]
ColourAzure bleu, dark bleu and ligt bleu
LusterGlass
StreakLight bleu
OpacityTransparent to translucent
SafetySafe
ExtraUsed as pigment.
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Photos

Azurite

(2 cm)

Azurite

(3 mm)

Azurite

(2 cm)

Azurite

(1 cm)

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Sources

[1] Wikipedia

[2] Specimen from my personal collection, photo taken by me.