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Phyllite
Phyllite

Gneiss
Gneiss



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Phyllite
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Gneiss

Phyllite and Gneiss Definition

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1 Definition
1.1 Definition
Phyllite is a fine-grained metamorphic rock with a well-developed laminar structure, and is intermediate between slate and schist rocks
Gneiss is a common and widely distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks
1.2 History
1.2.1 Origin
Unknown
Unknown
1.2.2 Discoverer
Unknown
Unknown
1.3 Etymology
From Greek phullon leaf + -ite1
From the Middle High German verb gneist (to spark; so called because the rock glitters)
1.4 Class
Metamorphic Rocks
Metamorphic Rocks
1.4.1 Sub-Class
Durable Rock, Soft Rock
Durable Rock, Hard Rock
1.5 Family
1.5.1 Group
Not Applicable
Not Applicable
1.6 Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Medium Grained Rock, Opaque Rock

Definition of Phyllite and Gneiss

The general Phyllite and Gneiss definition can be stated as: Phyllite is a fine-grained metamorphic rock with a well-developed laminar structure, and is intermediate between slate and schist rocks. On the other hand, Gneiss is a common and widely distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks. Along with definition of Phyllite and Gneiss, get to know about Properties of Phyllite and Gneiss. Get to know more information about Phyllite and Gneiss origin and discoverer, etymology and class.

History of Phyllite and Gneiss

The history of Phyllite and Gneiss gives information about where the rock was found and who was its discoverer. Almost each and every aspect of Earth's history is recorded in rocks be it the volcanoes which were erupted or the plants, animals and organisms which are now extinct, as rocks are present from millions of years.

Phyllite and Gneiss Origin and Discoverer

Phyllite and Gneiss definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Formation of Phyllite and Gneiss. In this section, you will know about Phyllite and Gneiss Origin and Discoverer. Origin of Phyllite and Gneiss are Unknown. It is interesting to know the name of Phyllite and Gneiss discoverer. The discoverer of Phyllite and Gneiss are Unknown.

Etymology of Phyllite and Gneiss

Along with Phyllite and Gneiss definition, know more about the etymology of Phyllite and Gneiss. Etymology of Phyllite and Gneiss gives information about origin and formation of a particular rock. Know more about Formation of Phyllite and Formation of Gneiss. The etymology of Phyllite is From Greek phullon leaf + -ite1 while that of Gneiss is From Greek phullon leaf + -ite1. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Phyllite and Gneiss belong to Metamorphic Rocks. The sub-class, group and other categories of Phyllite and Gneiss are listed below.

For Phyllite,

  • Sub-class: Durable Rock and Soft Rock
  • Group: Not applicable
  • Other Categories: Coarse grained rock, Fine grained rock, Medium grained rock and Opaque rock

For Gneiss,

  • Sub-class: Durable Rock and Hard Rock
  • Group: Not applicable
  • Other Categories: Coarse grained rock, Medium grained rock and Opaque rock