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.
Olivine
Olivine is a rock-forming mineral found in the crust, the mantle, and in some meteorites.
Tumbled Stones
Tumbled Stones: A bag of tumbled stones is like a colorful rock collection.
What Are Meteorites?
What Are Meteorites? Rocks which were once part of planets or large asteroids.
Asteroid Impact Map
Asteroid Impact Map: Explore fifty of the most obvious asteroid impact craters on Earth.
Homeowners Insurance
Homeowners Insurance usually does not cover the most common geologic hazards.
Novarupta
Wrong Volcano! The most powerful eruption of the 20th century was misidentified?
kyanite
Kyanite is a metamorphic mineral used to make porcelain, abrasive products and gems.


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
  Rock, Mineral and Fossil Collections.
  Minerals
  Hand Lens
  Fluorescent Minerals
  Mohs Hardness Scale
  Diamond
  Diamonds Do Not Form From Coal






© 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.