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

Home » Minerals » Magnesite

Magnesite


Mineral Properties and Uses



Physical Properties of Magnesite

Chemical Classification carbonate
Color white, grayish, yellowish, brownish, colorless
Streak white
Luster vitreous
Diaphaneity transparent to translucent
Cleavage perfect
Mohs Hardness 3.5 to 5.0
Specific Gravity 3.0 to 3.2
Diagnostic Properties dissolves with warm HCl in the powdered form
Chemical Composition MgCO3
Crystal System hexagonal
Uses refractory bricks, cement


Magnesite from Washington
Magnesite from Chewelah, Washington. Specimen is approximately 2-1/2 inches (6.4 centimeters) across.



Find it on Geology.com




More from Geology.com


rocks
Rock Gallery: Photos of igneous, sedimentary and metamorphic rocks.
shale gas
Shale Gas is natural gas trapped within shale. It is a growing source of US supply.
Gems from Space
Gems from Space A number of materials from space have been used as attractive gems.
Sliding Rocks
Sliding Rocks Mystery: What causes these rocks to slide across a Death Valley playa?
Labradorite
Labradorite: A feldspar that produces bright flashes of iridescent colors.
Opal
Pictures of Opal: A collection of different types of opal from all around the world and Mars too!
Garnet
Garnet is best known as a red gemstone. It occurs in any color and has many industrial uses.
Cave of the Hands
Cave of the Hands: A cave in Argentina with wall paintings that date back to about 7000 BC.


Magnesite
Magnesite from Chewelah, Washington. Specimen is approximately 3-1/2 inches (8.9 centimeters) across.




Magnesite from California
Magnesite from Riverside County, California. Specimen is approximately 4 inches (10 centimeters) across.


More Minerals
  Diamonds Do Not Form From Coal
  Minerals
  Fluorescent Minerals
  Minerals in Colored Glass
  Mineral Identification Chart
  Quartz
  The Acid Test
  Corundum




© 2005-2014 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.