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

Home » Minerals » Glauconite

Glauconite


Mineral Properties and Uses



Physical Properties of Glauconite

Chemical Classification silicate
Color green, blue green
Streak dull green
Luster earthy to dull
Diaphaneity transparent to translucent
Cleavage perfect
Mohs Hardness 2
Specific Gravity 2.4 to 3.0
Diagnostic Properties color
Chemical Composition (K,Na)(Fe3+,Al,Mg)2((Si,Al)4O10)(OH)2
Crystal System monoclinic
Uses fertilizer, soil amendment


Glauconite in sandstone
This is glauconite in sandstone from Afton, Minnesota. Specimen is approximately 3-1/2 inches (8.9 centimeters) across.




Find it on Geology.com




More from Geology.com


Dallol Volcano
Strange Volcanic Landscape! Photos of Dallol Volcano - an explosion crater in Ethiopia.
The Largest Tsunami!
The Largest Tsunami! The tsunami with the highest run-up was in Lituya Bay, Alaska.
Fossils
Fossils: Learn about fossils and fossil discoveries around the world.
fireworks
The Science of Fireworks Their shapes and colors are produced through chemistry, physics & art.
Gold
Gold - An important metal for thousands of years - uses, prospecting, mining, production.
Iris Agate
Iris Agate produces surprising colors when light passes through its thin bands.
Sunstone: Copper inclusions give this feldspar an aventurescent flash.
Tanzanite
Tanzanite was unknown until a few decades ago but it has erupted into wide popularity.


Glauconite
Glauconite, or greensand, from Birmingham, New Jersey. These specimens are small particles 1 to 2 millimeters across.




More Minerals
  Minerals
  Mohs Hardness Scale
  Fluorescent Minerals
  Diamonds Do Not Form From Coal
  Mineral Identification Chart
  Quartz
  Minerals in Colored Glass
  United States Gemstones




© 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.