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

Home » Minerals » Pyrophyllite

Pyrophyllite


Mineral Properties and Uses



Physical Properties of Pyrophyllite

Chemical Classification silicate
Color white, pale blue, yellow, grayish green, brownish green
Streak white
Luster pearly to greasy
Diaphaneity translucent
Cleavage perfect
Mohs Hardness 1 to 2
Specific Gravity 2.7 to 2.9
Diagnostic Properties cleavage, greasy feel
Chemical Composition Al2Si4O10(OH)2
Crystal System monoclinic
Uses ceramics, refractory materials


Pyrophyllite
Layering of pyrophyllite from Moore County, North Carolina. Specimen is approximately 3/4 inch (1.9 centimeters) thick.



Find it on Geology.com




More from Geology.com


Diamonds from Coal
Biggest Misconception: Lots of people think that diamonds form from coal. Not True!
Types of Volcanic Eruptions
Types of Volcanic Eruptions: A description of the most common eruption types.
Ammolite
Ammolite is a fossil and a gemstone. It is shell material from fossil ammonites.
Horizontal Drilling
Horizontal Drilling has opened new resources and significantly improved productivity.
Uses of granite
Uses of Granite: The rock used everywhere from the kitchen to the facing stone of skyscrapers.
Olivine
Olivine is a rock-forming mineral found in the crust, the mantle, and in some meteorites.
Mount Vesuvius
Mount Vesuvius: Geology, history, maps, facts and more about Vesuvius Volcano.
Shale
Shale: The rock that is quickly transforming the energy industry.


Pyrophyllite
Pyrophyllite from Moore County, North Carolina. Specimen is approximately 4 inches (10 centimeters) across.




More Minerals
  Minerals
  Mohs Hardness Scale
  Fluorescent Minerals
  Diamonds Do Not Form From Coal
  Mineral Identification Chart
  Quartz
  Minerals in Colored Glass
  The Acid Test




© 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.