Obsidian and Trachyandesite Definition

Definition of Obsidian and Trachyandesite

The general Obsidian and Trachyandesite 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, Trachyandesite is an extrusive igneous rock.. Along with definition of Obsidian and Trachyandesite, get to know about Properties of Obsidian and Trachyandesite. Get to know more information about Obsidian and Trachyandesite origin and discoverer, etymology and class.

History of Obsidian and Trachyandesite

The history of Obsidian and Trachyandesite 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 Trachyandesite Origin and Discoverer

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

Etymology of Obsidian and Trachyandesite

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

For Obsidian,

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

For Trachyandesite,

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