Obsidian and Troctolite Definition

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.

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.

For Obsidian,

• Sub-class: Durable Rock and Medium Hardness Rock
• Group: Volcanic
• Other Categories: Opaque rock

For Troctolite,

• Sub-class: Durable Rock and Hard Rock
• Group: Plutonic
• Other Categories: Coarse grained rock and Opaque rock