Difference between revisions of "Azurite"

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(moved properties into a table and edited)
m (Localities)
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==Localities==
 
==Localities==
*dark blue almost black crytals have come from Tsumbed (Namibia) and Morocco
+
*dark blue almost black crystals have come from Tsumbed (Namibia) and Morocco
 
*Australia (Queensland), Chile, Mexico, Russia (Ural) and United states (Arizona, New Mexico)
 
*Australia (Queensland), Chile, Mexico, Russia (Ural) and United states (Arizona, New Mexico)
  
 
==Sources==
 
==Sources==
 
* ''Gemstones of the world'' - Walter Schumann
 
* ''Gemstones of the world'' - Walter Schumann

Revision as of 08:58, 30 July 2007

Azurite
Chemical composition Cu3(CO3)2(OH)2
Crystal system Monoclinic
Habit Short columlar, botryoidal
Cleavage Indistinct
Fracture Conchoidal, uneven, brittle
Hardness 3 1/2 - 4
Optic nature Biaxial +
Refractive index 1.720-1.848
Birefringence 0.108-0.110
Specific gravity 3.7-3.9
Lustre Vitreous
Pleochroism Light blue, dark blue

Azurite is named after its azure-blue color having a vitreous lustre.

Localities

  • dark blue almost black crystals have come from Tsumbed (Namibia) and Morocco
  • Australia (Queensland), Chile, Mexico, Russia (Ural) and United states (Arizona, New Mexico)

Sources

  • Gemstones of the world - Walter Schumann