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


gem photos
100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure.
San Andreas Map
Google Map of the San Andreas Fault: Zoom in to see the fault trace plotted atop of a map.
Chatoyant Gems
Chatoyant Gems look like the eye of a cat. A line of light moves across the surface of the stone.
glaciers
What are Glaciers? Learn how glaciers form, flow, advance, retreat, and change over time.
Gemstones
Gemstones: Fantastic images and articles about colored stones and diamonds.
Solar System Volcanoes
Solar System Volcanoes: Earth is not the only location of volcanic activity.
Great Rift Valley
The East Africa Rift System: Learn about the complex East Africa Rift Valley system.
caldera
Calderas are enormous volcanic craters formed by some of Earth\'s largest eruptions.


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
  Fluorescent Minerals
  Minerals
  Quartz
  The Streak Test
  Diamond
  Diopside
  Hand Lens
  Topaz




© 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.