Home » Minerals » Pyrrhotite

Pyrrhotite


Mineral Properties and Uses



What is Pyrrhotite?



Pyrrhotite is an iron sulfide mineral found in basic igneous rocks, pegmatites, vein deposits, and contact metamorphic deposits. It is slighly magnetic.


Physical Properties of Pyrrhotite

Chemical Classification sulfide
Color bronze yellow, brownish bronze, reddish bronze
Streak dark grayish black
Luster metallic
Diaphaneity opaque
Cleavage none
Mohs Hardness 3.5 to 4.5
Specific Gravity 4.6 to 4.7
Diagnostic Properties color, magnetism
Chemical Composition iron sulfide, Fe1-xS
Crystal System monoclinic
Uses a very minor ore of iron


Uses of Pyrrhotite?



Pyrrhotite is mined primarily because it is associated with pentlandite, sulfide mineral that can contain significant amounts of nickel and cobalt.


Pyrrhotite
Pyrrhotite from Falconbridge, Ontario, Canada. Specimen is approximately 2-1/2 inches (6.4 centimeters) across.



Find it on Geology.com




More from Geology.com


rock tumblers
Rock Tumblers - All about rock tumblers and rock tumbling. Read before you buy a tumbler.
Sliding Rocks
Sliding Rocks Mystery: What causes these rocks to slide across a Death Valley playa?
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.
rocks
Rock Gallery: Photos of igneous, sedimentary and metamorphic rocks.
Blood Diamonds
Blood Diamonds are illegally-traded diamonds that are often used to fund conflict.
Labradorite
Labradorite: A feldspar that produces bright flashes of iridescent colors.
Oil and Gas
Oil and Gas: Articles about oil and natural gas in the US and around the world.


Pyrrhotite
Pyrrhotite from Falconbridge, Ontario, Canada. Specimen is approximately 3 inches (7.6 centimeters) across.




Pyrrhotite
Nickeliferous pyrrhotite from Falconbridge, Ontario, Canada. Specimen is approximately 5 inches (12.7 centimeters) across.


More Minerals
  Minerals
  Fluorescent Minerals
  Mohs Hardness Scale
  Diamond
  Diamonds Do Not Form From Coal
  Quartz
  Calcite
  United States Gemstones




© 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.