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

Home » Minerals » Nepheline

Nepheline


Mineral Properties and Uses



Physical Properties of Nepheline

Chemical Classification silicate
Color colorless, white, yellowish, brownish red, greenish
Streak white
Luster greasy to vitreous
Diaphaneity transparent to translucent
Cleavage poor
Mohs Hardness 5.5 to 6
Specific Gravity 2.6 to 2.7
Diagnostic Properties greasy luster, poor cleavage
Chemical Composition (Na,K)AlSiO4
Crystal System hexagonal
Uses industrial use, glass industry.


Nepheline, brownish red
Nepheline from Bancroft, Ontario, Canada. Specimen is approximately 4 inches (10 centimeters) across.


Nepheline cancrinite syenite
Nepheline cancrinite syenite from Litchfield, Maine. Specimen is approximately 4 inches (10 centimeters) across.



Find it on Geology.com




More from Geology.com


Hydraulic Fracturing
Hydraulic Fracturing: Increases well yield by fracturing the reservoir rock with fluid injection.
Plate Tectonics
Plate Tectonics: Articles and maps about plate tectonics and the interior of Earth.
Green River Formation
The Green River Formation is one of the most famous rock units in the world for its fossils.
Coal
Coal Through a Microscope: Coal is more than a black rock. It's THE most interesting rock.
Petrified Wood
Petrified Wood is a fossil that forms when dissolved material precipitates and replaces wood.
bear attack
Bear Attacks! Knowing how to react to a bear encounter and attack could save your life.
Homeowners Insurance
Homeowners Insurance usually does not cover the most common geologic hazards.
Fossils
Fossils: Learn about fossils and fossil discoveries around the world.


Nepheline
Nepheline from Dungannon Township, Ontario, Canada. Specimen is approximately 3 inches (7.6 centimeters) across.




Nepheline from Canada
Nepheline from Dungannon Township, Ontario, Canada. Specimen is approximately 3 inches (7.6 centimeters) across.


More Minerals
  Kyanite
  Minerals
  Gold
  Fluorescent Minerals
  Mohs Hardness Scale
  Mineral Identification Chart
  Quartz
  Diamonds Do Not Form From Coal




© 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.