Obsidian and Trachyte Definition

Definition of Obsidian and Trachyte

The general Obsidian and Trachyte 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, Trachyte is a grey fine-grained volcanic rock which mainly consists of alkali feldspar. Along with definition of Obsidian and Trachyte, get to know about Properties of Obsidian and Trachyte. Get to know more information about Obsidian and Trachyte origin and discoverer, etymology and class.

History of Obsidian and Trachyte

The history of Obsidian and Trachyte 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 Trachyte Origin and Discoverer

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

Etymology of Obsidian and Trachyte

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

For Obsidian,

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

For Trachyte,

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