Obsidian and Tachylite Definition

Definition of Obsidian and Tachylite

The general Obsidian and Tachylite 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, Tachylite is a vitreous form of basaltic volcanic glass. This glass is formed naturally by the rapid cooling of molten basalt. Along with definition of Obsidian and Tachylite, get to know about Properties of Obsidian and Tachylite. Get to know more information about Obsidian and Tachylite origin and discoverer, etymology and class.

History of Obsidian and Tachylite

The history of Obsidian and Tachylite 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 Tachylite Origin and Discoverer

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

Etymology of Obsidian and Tachylite

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

For Obsidian,

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

For Tachylite,

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