• Pyrophyllite - Wikipedia

    en.wikipedia.org/wiki/Pyrophyllite Pyrophyllite is a phyllosilicate mineral composed of aluminium silicate hydroxide: Al 2 Si 4 O 10 (OH) 2.It occurs in two forms (): crystalline folia and compact masses; distinct crystals are not known.The folia have a pronounced pearly luster, owing to the presence of a perfect cleavage parallel to their surfaces: they are flexible but not elastic, and are usually arranged radially in fan ...
  • Pyrophyllite: Mineral information, data and localities.

    www.mindat.org/min-3323.html Pyrophyllite-Talc Group. The Al analogue of ferripyrophyllite. Two polytypes are known, a monoclinic one (2M) and a triclinic one (1A). Visit gemdat.org for gemological information about Pyrophyllite.
  • Pyrophyllite Mineral Data

    webmineral.com/data/Pyrophyllite.shtml Wardle R , Brindley G W , American Mineralogist , 57 (1972) p.732-750, The crystal structures of pyrophyllite, 1Tc, and of its dehydroxylate
  • PYROPHYLLITE (Aluminum Silicate Hydroxide)

    www.galleries.com/Pyrophyllite Pyrophyllite is an early stage metamorphic mineral and is actually quite common although usually not very abundant as good mineral specimens. It is found as a constituent of slate, phyllite (which is not named after pyrophyllite), some schists and other early stage metamorphic rocks.
  • Pyrophyllite - an overview | ScienceDirect Topics

    www.sciencedirect.com/topics/engineering/pyrophyllite K.J.D. Mackenzie, in Geopolymers, 2009. 14.3.1 Pyrophyllite dehydroxylation. The structure of pyrophyllite, Al 4 Si 8 O 20 (OH) 4 consists of an octahedral Al-O layer (b) sandwiched between two tetrahedral Si-O layers (a) (Fig. 14.1B), with a stacking sequence of aba aba aba.The silica tetrahedra point inwards and, as in kaolinite, there is little or no tetrahedral substitution of silicon by ...
  • Pyrophyllite: The mineral pyrophyllite information and ...

    www.minerals.net/mineral/pyrophyllite.aspx Pyrophyllite is isomorphous with the common mineral Talc, but has aluminum in place of the magnesium.It is very similar to Talc, with very similar properties and habits. However, it has distinct radiating crystal aggregates which easily identify it. Pyrophyllite is named after the Greek words "pyr" - "fire" and "phyllon" - leaf, regarding its property to exfoliate into fan shapes upon heating.
  • Pyrophyllite | mineral | Britannica

    www.britannica.com/science/pyrophyllite Pyrophyllite, very soft, pale-coloured silicate mineral, hydrated aluminum silicate, Al2(OH)2 Si4O10, that is the main constituent of some schistose rocks. The most extensive commercial deposits are in North Carolina, but pyrophyllite is also mined in California, China, India, Thailand, Japan,
  • What is Pyrophyllite? | Trinity Resources | Talc and ...

    www.trinityresources.ca/the-company/about-pyrophyllite What is Pyrophyllite? Geology:. Pyrophyllite is a hydrous aluminum silicate mineral Al 2 Si 4 O 10 (OH) 2.. It occurs in phyllite and schistose rocks, often associated with kyanite, of which it is an alteration product.
  • Pyrophyllite | Definition of Pyrophyllite by Merriam-Webster

    www.merriam-webster.com/dictionary/pyrophyllite Pyrophyllite definition is - a soft usually white or greenish mineral that is a hydrous aluminum silicate, resembles talc, occurs in a foliated form or in compact masses, and is used especially in ceramic wares.
  • Pyrophyllite - definition of pyrophyllite by The Free ...

    www.thefreedictionary.com/pyrophyllite py·ro·phyl·lite (pī′rō-fĭl′īt′, pī-rŏf′ə-līt′) n. A silvery white or pale green aluminum silicate mineral, Al2Si4O10(OH)2, occurring naturally in soft compact masses. pyrophyllite (ˌpaɪrəʊˈfɪlaɪt) n (Minerals) a white, silvery, or green micaceous mineral that consists of hydrated aluminium silicate in monoclinic crystalline ...