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

Home » Minerals » Marcasite

Marcasite


Mineral Properties and Uses



What is Marcasite?



Marcasite is an iron sulfide mineral. It has the same chemical composition as pyrite, however these two minerals are in different crystal systems (marcasite is orthorhombic and pyrite is isometric).


Physical Properties of Marcasite

Chemical Classification sulfide
Color pale bronze yellow
Streak grayish black
Luster metallic
Diaphaneity opaque
Cleavage poor
Mohs Hardness 6 to 7.5
Specific Gravity 4.9
Diagnostic Properties color
Chemical Composition iron sulfide, FeS2
Crystal System orthorhombic
Uses


Uses of Marcasite?



Very few commercial uses. Has been used as a source of sulfur and as an ornamental stone (many of the ornamental stones sold under the name of "marcasite" are actually pyrite).




Find it on Geology.com




More from Geology.com


Homeowners Insurance
Homeowners Insurance usually does not cover the most common geologic hazards.
Garnet
Garnet is best known as a red gemstone. It occurs in any color and has many industrial uses.
hurricane names
How Are Hurricanes Named? Names are assigned as tropical storms are discovered.
Diamonds from Coal
Biggest Misconception: Lots of people think that diamonds form from coal. Not True!
US Gemstones
United States Gemstones: A diversity of gemstones are produced in the United States.
Minerals
Minerals: Information about ore minerals, gem materials and rock-forming minerals.
Novarupta
Wrong Volcano! The most powerful eruption of the 20th century was misidentified?
The Largest Tsunami!
The Largest Tsunami! The tsunami with the highest run-up was in Lituya Bay, Alaska.




More Minerals
  Fluorescent Minerals
  Minerals
  The Acid Test
  Corundum
  Mineral Identification Chart
  Rhodochrosite
  Quartz
  Rhodonite




© 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.