from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A silvery white or pale green aluminum silicate mineral, Al2Si4O10(OH)2, occurring naturally in soft compact masses.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A soft, pale aluminosilicate mineral, somewhat resembling talc.

from the GNU version of the Collaborative International Dictionary of English

  • n. A mineral, usually of a white or greenish color and pearly luster, consisting chiefly of the hydrous silicate of alumina.

from The Century Dictionary and Cyclopedia

  • n. A hydrated aluminium silicate, occurring in foliated talc-like subtransparent masses having a white, green, or yellow color and pearly luster.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a white or greenish aluminum silicate mineral (resembles talc)


Sorry, no etymologies found.


  • The name pyrophyllite comes from the Greek words pyr meaning fire and phyllon meaning leaf, a reference to the fact that it flakes when heated.

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  • Minerals that could be used to replace feldspar include pyrophyllite, clays, talc, and feldspar-silica (quartz) mixtures.


  • Despite the volume of talc/pyrophyllite produced domestically, some is imported from China, Canada, Japan, and other countries.


  • All the pyrophyllite produced in the United States is mined in North Carolina.


  • The United States produces enough talc and pyrophyllite to meet its annual needs.


  • The available reserves of talc are sufficient for many decades to come so such substitutions are not necessary, though they may be cost-effective depending on the relative costs of talc, mica, pyrophyllite and kaolin.


  • Two different minerals with similar physical properties are talc and pyrophyllite.


  • Chinese “soapstone” carvings are carved from fine-grained pyrophyllite.


  • There are numerous talc and pyrophyllite resources worldwide.


  • Both are very soft: talc is the softest mineral on the Mohs 'hardness scale at 1, and pyrophyllite is 1 to 2.



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