McAfee SECURE sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams

Home » Minerals » Azurite

Azurite


Mineral Properties and Uses



What is Azurite?



Azurite is a deep blue copper carbonate. It serves as a minor ore of copper. It is also a popular gem and ornamental stone because of its blue color. Azurite's low hardness limits its use as a gem and as an ornamental stone. It is often found in association with malachite in the oxidized zone above copper deposits.


Physical Properties of Azurite

Chemical Classification carbonate
Color azure blue
Streak light blue
Luster vitreous
Diaphaneity transparent to translucent
Cleavage two directions, one perfect and one poor
Mohs Hardness 3.5 to 4
Specific Gravity 3.8
Diagnostic Properties vivid blue color, effervescence in HCl, high specific gravity
Chemical Composition copper carbonate - Cu3(CO3)2(OH)2
Crystal System monoclinic
Uses minor ore of copper, gemstone, ornamental stone, pigment


Azurite pendant
Azurite and malachite from Morenci, Arizona cut as a freeform cabochon. This gemstone is approximately 27 millimeters by 23 millimeters.


Contributor:



Find it on Geology.com




More from Geology.com


Turquoise
Turquoise - A blue to bluish-green gem material that has been used for over 6000 years.
The San Andreas Fault
The San Andreas Fault: A feature that separates the Pacific and North American Plates.
The Acid Test
The Acid Test: Geologists use dilute hydrochloric acid to identify carbonate minerals.
Minerals
Minerals: Information about ore minerals, gem materials and rock-forming minerals.
Utica Shale
Utica Shale is confirmed as a major source of oil, natural gas and natural gas liquids.
Trap Rock
Trap Rock is a named applied to any dark-colored igneous rock used to produce crushed stone.
Titan Submarine
Exploring a Hydrocarbon Sea on Titan with a submarine is a potential NASA mission.
Gold
Gold - An important metal for thousands of years - uses, prospecting, mining, production.


Azurite
Azurite from Tintic, Utah. Specimen is approximately 4 inches (10 centimeters) across.




Azurite malachite earrings
Azurite and malachite from Morenci, Arizona cut as freeform cabochons. Each piece is approximately 13 millimeters by 18 millimeters.


More Minerals
  Minerals
  Quartz
  Fluorescent Minerals
  Mineral Identification Chart
  Find Minerals and Gems
  Diamond
  Diamonds Do Not Form From Coal
  United States Gemstones




© 2005-2015 Geology.com. All Rights Reserved.
Images, code and content of this website are property of Geology.com. Use without permission is prohibited. Pages on this site are protected by Copyscape.