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

Home » Minerals » Plagioclase

Plagioclase


Mineral Properties and Uses



Physical Properties of Plagioclase

Chemical Classification silicate
Color colorless, white, gray, bluish, greenish, yellowish, reddish
Streak white
Luster vitreous
Diaphaneity transparent to translucent
Cleavage perfect
Mohs Hardness 6 to 6.5
Specific Gravity 2.6 to 2.8
Diagnostic Properties cleavage
Chemical Composition NaAlSi3O8 CaAl2Si2O8
Crystal System triclinic
Uses decorative stone, moon stone, buildings



Find it on Geology.com




More from Geology.com


strontium titanate
Strontium Titanate is a man-made diamond simulant with a fire much stronger than diamond.
Fire Opal
Fire Opal is a transparent to translucent opal with a yellow, orange or red background color.
Stromboli Volcano
Stromboli Volcano: Geology, history, maps, plate tectonics and more.
Download Google Earth Free
Free Google Earth software allows you to browse seamless world satellite images. Free.
Natural Gas Investing
Natural Gas Investing Kenny DuBose wants you to ask: Why did this deal come my way?
Debris Flows
Debris Flows are moving masses of loose mud, sand, soil, rock and water.
Iris Agate
Iris Agate produces surprising colors when light passes through its thin bands.
Tallest Waterfall
Tallest Waterfall: Angel Falls in Venezuela. Image Birget Prentner / iStockphoto.




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




© 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.