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

Home » Minerals » Rutile

Rutile


Mineral Properties and Uses



What is Rutile?



Rutile is a titanium oxide mineral that is most commonly found in granites, pegmatites and metamorphic rocks. It is also found in sands derived from the weathering of these rocks. Rutile also forms as slender crystals within quartz and micas. It is a common mineral in the alluvial sands that are dredged for magnetite and ilmenite.


Physical Properties of Rutile

Chemical Classification oxide
Color red, reddish brown, reddish black
Streak pale brown
Luster adamantine to submetallic
Diaphaneity transparent to subtranslucent
Cleavage good
Mohs Hardness 6 to 6.5
Specific Gravity 4.2 to 4.4
Diagnostic Properties luster, color
Chemical Composition titanium oxide, TiO2
Crystal System tetragonal
Uses an ore of titanium, pigments, inert coating on welding rods


Uses of Rutile?



Rutile is used as a coating on welding rods. It is also used as an ore of titanium, a metal used where light weight and high strength are needed. Some rutile used in the production of pigments for paints.


Rutile ilmenite zircon sand
Sand made of rutile ilmenite zircon from Georgia. Specimens are sand size particles.


Rutilated quartz cabochons
Cabochons of rutilated quartz - an example of how long thin crystals of rutile can form in quartz. Each gem is approximately 12 millimeters by 10 millimeters.



Find it on Geology.com




More from Geology.com


Plate Tectoncs
Zoom in on Plate Boundaries: See the details of plate tectonics in satellite view.
Sliding Rocks
Sliding Rocks Mystery: What causes these rocks to slide across a Death Valley playa?
US Gemstones
United States Gemstones: A diversity of gemstones are produced in the United States.
shale gas
Shale Gas is natural gas trapped within shale. It is a growing source of US supply.
bear attack
Bear Attacks! Knowing how to react to a bear encounter and attack could save your life.
Novarupta
Wrong Volcano! The most powerful eruption of the 20th century was misidentified?
Organic Gems
Organic Gems are gems formed from or by plants or animals. They might also be fossils.
Mount Etna
Mount Etna: The most active volcano in Europe, continues an eruption that started in 2001.


Rutile
Rutile from Oaxaca, Mexico. Specimen is approximately 1 inch (2.5 centimeters) across.




Ilmenorutile
Ilmenorutile, a variety of rutile from Iveland, Norway. Specimen is approximately 2 inches (5 centimeters) across.


Rutile nigrine
Nigrine, a variety of rutile from Magnet Cove, Arkansas. Specimens are approximately 1/2 inch to 1 inch (1.3 centimeters to 2.5 centimeters) across.


More Minerals
  Minerals
  Diamonds Do Not Form From Coal
  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.