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Troctolite and Shonkinite Definition


Shonkinite and Troctolite Definition


Definition

Definition
Troctolite is a mafic intrusive rock type. It consists essentially of major but variable amounts of olivine and calcic plagioclase along with minor pyroxene. It is an olivine-rich anorthosite, or a pyroxene-depleted relative of gabbro   
Shonkinite is a rare, dark-coloured and intrusive igneous rock which contains augite and orthoclase feldspar as its primary constituents   

History
  
  

Origin
Unknown   
USA   

Discoverer
Christian Leopold von Buch   
Unknown   

Etymology
From German Troklotit, from Greek trōktēs, a marine fish (taken to be trout)   
From the name of Shonkin Sag ranges in the Highwood Mountains of north-central Montana, US   

Class
Igneous Rocks   
Igneous Rocks   

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

Family
  
  

Group
Plutonic   
Not Applicable   

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

Texture >>
<< Summary

Definition of Troctolite and Shonkinite

The general Troctolite and Shonkinite definition can be stated as: Troctolite is a mafic intrusive rock type. It consists essentially of major but variable amounts of olivine and calcic plagioclase along with minor pyroxene. It is an olivine-rich anorthosite, or a pyroxene-depleted relative of gabbro. On the other hand, Shonkinite is a rare, dark-coloured and intrusive igneous rock which contains augite and orthoclase feldspar as its primary constituents. Along with definition of Troctolite and Shonkinite, get to know about Properties of Troctolite and Shonkinite. Get to know more information about Troctolite and Shonkinite origin and discoverer, etymology and class.

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History of Troctolite and Shonkinite

The history of Troctolite and Shonkinite 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.

Troctolite and Shonkinite Origin and Discoverer

Troctolite and Shonkinite definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Formation of Troctolite and Shonkinite. In this section, you will know about Troctolite and Shonkinite Origin and Discoverer. Origin of Troctolite is Unknown whereas Origin of Shonkinite is USA. It is interesting to know the name of Troctolite and Shonkinite discoverer. The Discoverer of Troctolite is Christian Leopold von Buch and the discoverer of Shonkinite is Unknown.

Etymology of Troctolite and Shonkinite

Along with Troctolite and Shonkinite definition, know more about the etymology of Troctolite and Shonkinite. Etymology of Troctolite and Shonkinite gives information about origin and formation of a particular rock. Know more about Formation of Troctolite and Formation of Shonkinite. The etymology of Troctolite is From German Troklotit, from Greek trōktēs, a marine fish (taken to be trout) while that of Shonkinite is From German Troklotit, from Greek trōktēs, a marine fish (taken to be trout). The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Troctolite and Shonkinite belong to Igneous Rocks. The sub-class, group and other categories of Troctolite and Shonkinite are listed below.

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