Tephrite and Obsidian Definition

Definition of Tephrite and Obsidian

The general Tephrite and Obsidian definition can be stated as: Tephrite is an aphanitic to porphyritic textured, volcanic igneous rock. On the other hand, 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. Along with definition of Tephrite and Obsidian, get to know about Properties of Tephrite and Obsidian. Get to know more information about Tephrite and Obsidian origin and discoverer, etymology and class.

History of Tephrite and Obsidian

The history of Tephrite and Obsidian 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.

Tephrite and Obsidian Origin and Discoverer

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

Etymology of Tephrite and Obsidian

Along with Tephrite and Obsidian definition, know more about the etymology of Tephrite and Obsidian. Etymology of Tephrite and Obsidian gives information about origin and formation of a particular rock. Know more about Formation of Tephrite and Formation of Obsidian. The etymology of Tephrite is From Greek tephra, ashes from Indo-European base, to burn while that of Obsidian is From Greek tephra, ashes from Indo-European base, to burn. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Tephrite and Obsidian belong to Igneous Rocks. The sub-class, group and other categories of Tephrite and Obsidian are listed below.

For Tephrite,

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

For Obsidian,

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