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

Home » Minerals » Chlorite

Chlorite


Mineral Properties and Uses



What is Chlorite?



"Chlorite" is a name used for a group of sheet silicate minerals with similar properties. They are primarily found in weakly metamorphosed rock and form from the alteration of clay-rich sedimentary rocks and from alteration of pyroxenes, amphiboles and micas. They are also found in some sediments.


Physical Properties of Chlorite

Chemical Classification
Color various shades of green, yellow, white, pink, rose-red
Streak greenish to greenish black to white
Luster vitreous to pearly
Diaphaneity transparent to translucent
Cleavage basal, perfect
Mohs Hardness 2 to 2.5
Specific Gravity 2.6 to 3.3
Diagnostic Properties color, hardness
Chemical Composition a generalized formula:
(Mg,Fe)3(Si,Al)4O10(OH)2.(Mg,Fe)3(OH)6

(Many solid solution possiblities exist with the "chlorite" composition, each producing a specimen with slightly varying properties. Chlorite minerals include clinochlore (most abundant), baileychlore, chamosite, cookeite, donbassite, gonyerite, nimite, odinite, orthochamosite, pennantite, ripidolite, sudoite.
Crystal System monoclinic
Uses Very few industrial uses. Used as a filler and as a constituent of clay.



Find it on Geology.com




More from Geology.com


Rock Glaciers
Rock Glaciers - Masses of ice, snow, rock, mud and water that slowly flow down slope.
Salt Glaciers
Salt Glaciers are masses of salt that flow downslope under their own weight.
Malachite
Malachite has served as a gem material, pigment and ore of copper for thousands of years.
Landslides
Landslides - A USGS fact sheet about landslides and events that trigger them.
Hydraulic Fracturing
Hydraulic Fracturing: Increases well yield by fracturing the reservoir rock with fluid injection.
Who Owns The Arctic?
Who Owns The Arctic? USGS estimates that 25% of all new oil & gas will be found in the Arctic.
US Gemstones
United States Gemstones: A diversity of gemstones are produced in the United States.
Spinel
Spinel: The gemstone that was confused with ruby and sapphire for over 1000 years.


Chlorite
Chlorite from Quebec, Canada. This specimen is approximately 3 inches (7.6 centimeters) across.




Chlorite layering
A side view of the layering of chlorite from Quebec, Canada. Specimen is approximately 3 inches (7.6 centimeters) across.


More Minerals
  Minerals
  Quartz
  Mineral Identification Chart
  Fluorescent Minerals
  Find Minerals and Gems
  Diamond
  United States Gemstones
  Diamonds Do Not Form From Coal




© 2005-2015 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.