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Slate and Ijolite Definition


Ijolite and Slate Definition


Definition

Definition
Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism   
Ijolite is an intrusive igneous rock which is composed mainly of nepheline and an alkali pyroxene, usually aegirine-augite   

History
  
  

Origin
England   
Finland, Europe   

Discoverer
Unknown   
Unknown   

Etymology
From Old French esclate, from esclat (French éclat)   
From the first syllable of the Finnish words Ii-vaara, Iijoki, &c. commonly used geographical names in Finland, and the Gr. Xiflos, a stone   

Class
Metamorphic Rocks   
Igneous Rocks   

Sub-Class
Durable Rock, Medium Hardness Rock   
Durable Rock, Medium Hardness Rock   

Family
  
  

Group
Not Applicable   
Plutonic   

Other Categories
Fine Grained Rock, Opaque Rock   
Coarse Grained Rock, Opaque Rock   

Texture >>
<< Summary

Definition of Slate and Ijolite

The general Slate and Ijolite definition can be stated as: Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism. On the other hand, Ijolite is an intrusive igneous rock which is composed mainly of nepheline and an alkali pyroxene, usually aegirine-augite. Along with definition of Slate and Ijolite, get to know about Properties of Slate and Ijolite. Get to know more information about Slate and Ijolite origin and discoverer, etymology and class.

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History of Slate and Ijolite

The history of Slate and Ijolite 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.

Slate and Ijolite Origin and Discoverer

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

Etymology of Slate and Ijolite

Along with Slate and Ijolite definition, know more about the etymology of Slate and Ijolite. Etymology of Slate and Ijolite gives information about origin and formation of a particular rock. Know more about Formation of Slate and Formation of Ijolite. The etymology of Slate is From Old French esclate, from esclat (French éclat) while that of Ijolite is From Old French esclate, from esclat (French éclat). The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Slate belongs to Metamorphic Rocks while Ijolite belongs to Igneous Rocks. The sub-class, group and other categories of Slate and Ijolite are listed below.

For Slate,

For Ijolite,

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