Definition of phyllite in English:

phyllite

Syllabification: phyl·lite
Pronunciation: /ˈfilīt
 
/

noun

Geology
  • A fine-grained metamorphic rock with a well-developed laminar structure, intermediate between slate and schist in degree of metamorphism.
    More example sentences
    • It is composed of gneiss and migmatite that contain minor lenses of schist, marble, phyllite and quartzite.
    • Foliated rocks may be slate, phyllite, or schist according to grain size.
    • Clasts in this facies are commonly arranged into stripes of a single lithology (typically phyllite, schist, quartzite or marble) and show peaks in the angular and very angular classes.

Origin

late 19th century: from Greek phullon 'leaf' + -ite1.

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