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Obsidian
Obsidian

Trondhjemite
Trondhjemite



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Obsidian and Trondhjemite Definition

Definition

Definition

Origin

Discoverer

Etymology

Class

Sub-Class

Group

Other Categories

 
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
Ethiopia
Obsius
From Latin obsidianus, misprint of Obsianus (lapis) (stone) of Obsius
Igneous Rocks
Durable Rock, Medium Hardness Rock
Volcanic
Opaque Rock
 
Trondhjemite is a leucocratic (light-colored) intrusive igneous rock. It is a variety of tonalite in which the plagioclase is mostly in the form of oligoclase. Trondhjemites are sometimes known as plagiogranites.
Tonale, Italy
Unknown
From Trondheim, Norway
Igneous Rocks
Durable Rock, Hard Rock
Plutonic
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock

Definition of Obsidian and Trondhjemite

The general Obsidian and Trondhjemite definition can be stated as: . On the other hand, . Along with definition of Obsidian and Trondhjemite, get to know about Obsidian vs Trondhjemite. Get to know more information about Obsidian and Trondhjemite origin and discoverer, etymology and class.

History of Obsidian and Trondhjemite

The history of Obsidian and Trondhjemite 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 Trondhjemite Origin and Discoverer

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

Etymology of Obsidian and Trondhjemite

Along with Obsidian and Trondhjemite definition, know more about the etymology of Obsidian and Trondhjemite. Etymology of Obsidian and Trondhjemite gives information about origin and formation of a particular rock. Know more about Formation of Obsidian and Formation of Trondhjemite. The etymology of Obsidian is while that of Trondhjemite is . The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Obsidian and Trondhjemite belong to . The sub-class, group and other categories of Obsidian and Trondhjemite are listed below.

For Obsidian,

  • Sub-class:
  • Group:
  • Other Categories:

For Trondhjemite,

  • Sub-class:
  • Group:
  • Other Categories: