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Obsidian and Troctolite Definition


Troctolite and Obsidian Definition


Definition

Definition
Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock. It is produced when felsic lava extruded from a volcano cools rapidly with minimum crystal growth   
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   

History
  
  

Origin
Ethiopia   
Unknown   

Discoverer
Obsius   
Christian Leopold von Buch   

Etymology
From Latin obsidianus, misprint of Obsianus (lapis) (stone) of Obsius   
From German Troklotit, from Greek trōktēs, a marine fish (taken to be trout)   

Class
Igneous Rocks   
Igneous Rocks   

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

Family
  
  

Group
Volcanic   
Plutonic   

Other Categories
Opaque Rock   
Coarse Grained Rock, Opaque Rock   

Texture >>
<< Summary

Definition of Obsidian and Troctolite

The general Obsidian and Troctolite definition can be stated as: Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock. It is produced when felsic lava extruded from a volcano cools rapidly with minimum crystal growth. On the other hand, 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. Along with definition of Obsidian and Troctolite, get to know about Properties of Obsidian and Troctolite. Get to know more information about Obsidian and Troctolite origin and discoverer, etymology and class.

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History of Obsidian and Troctolite

The history of Obsidian and Troctolite 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.

Obsidian and Troctolite Origin and Discoverer

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

Etymology of Obsidian and Troctolite

Along with Obsidian and Troctolite definition, know more about the etymology of Obsidian and Troctolite. Etymology of Obsidian and Troctolite gives information about origin and formation of a particular rock. Know more about Formation of Obsidian and Formation of Troctolite. The etymology of Obsidian is From Latin obsidianus, misprint of Obsianus (lapis) (stone) of Obsius while that of Troctolite is From Latin obsidianus, misprint of Obsianus (lapis) (stone) of Obsius. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Obsidian and Troctolite belong to Igneous Rocks. The sub-class, group and other categories of Obsidian and Troctolite are listed below.

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