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


Gfeller Leather Cases
Gfeller Leather field cases, hammer holsters, lanyards, field belts, acid bottle cases, more.
Crater of Diamonds
You Can Be A Diamond Miner! At the Crater of Diamonds Mine you keep what you find.
Geo Rock Bags
Rock Bags - Durable field bags with pockets for carrying maps, books, specimens and tools.
tumbled stones
Tumbled Stones are rocks that have been rounded, smoothed and polished in a rock tumbler.
Spodumene
Spodumene - an ore of lithium and the mineral of the gems kunzite and hiddenite.
Popigai Diamonds
The Largest Diamond Deposit in the world could be under Popigai Crater in Russia.
US Gemstones
United States Gemstones: A diversity of gemstones are produced in the United States.
jet
Jet is a black organic gem material that forms from well-preserved woody material.




More Minerals
  Kyanite
  Minerals
  The Science of Fireworks
  Calcite
  Rock, Mineral and Fossil Collections.
  Diamond
  Fluorescent Minerals
  Hand Lens






© 2005-2016 Geology.com. All Rights Reserved.
Images, code, and content on this website are property of Geology.com and are protected by copyright law.
Geology.com does not grant permission for any use, republication, or redistribution.
Images, code and content owned by others are marked on the pages where they appear.