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Rapakivi Granite and Arkose Definition


Arkose and Rapakivi Granite Definition


Definition

Definition
Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase   
Arkose is a sedimentary rock, specifically a type of sandstone containing at least 25% feldspar   

History
  
  

Origin
Finland, Europe   
France   

Discoverer
Jakob Sederholm   
Alexandre Brongniart   

Etymology
From Finnish Rapakivi which stands for crumbly rock   
From Auvergne region of France used by a French geologist Alexandre Brongniart in 1826 who applied this term to some feldspathic sandstones   

Class
Igneous Rocks   
Sedimentary Rocks   

Sub-Class
Durable Rock, Hard Rock   
Durable Rock, Hard Rock   

Family
  
  

Group
Plutonic   
Not Applicable   

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

Texture >>
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Definition of Rapakivi Granite and Arkose

The general Rapakivi Granite and Arkose definition can be stated as: Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase. On the other hand, Arkose is a sedimentary rock, specifically a type of sandstone containing at least 25% feldspar. Along with definition of Rapakivi Granite and Arkose, get to know about Properties of Rapakivi Granite and Arkose. Get to know more information about Rapakivi Granite and Arkose origin and discoverer, etymology and class.

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History of Rapakivi Granite and Arkose

The history of Rapakivi Granite and Arkose 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.

Rapakivi Granite and Arkose Origin and Discoverer

Rapakivi Granite and Arkose definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Formation of Rapakivi Granite and Arkose. In this section, you will know about Rapakivi Granite and Arkose Origin and Discoverer. Origin of Rapakivi Granite is Finland, Europe whereas Origin of Arkose is France. It is interesting to know the name of Rapakivi Granite and Arkose discoverer. The Discoverer of Rapakivi Granite is Jakob Sederholm and the discoverer of Arkose is Alexandre Brongniart.

Etymology of Rapakivi Granite and Arkose

Along with Rapakivi Granite and Arkose definition, know more about the etymology of Rapakivi Granite and Arkose. Etymology of Rapakivi Granite and Arkose gives information about origin and formation of a particular rock. Know more about Formation of Rapakivi Granite and Formation of Arkose. The etymology of Rapakivi Granite is From Finnish Rapakivi which stands for crumbly rock while that of Arkose is From Finnish Rapakivi which stands for crumbly rock. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Rapakivi Granite belongs to Igneous Rocks while Arkose belongs to Sedimentary Rocks. The sub-class, group and other categories of Rapakivi Granite and Arkose are listed below.

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