Obsidian and Adakite Definition

Definition of Obsidian and Adakite

The general Obsidian and Adakite 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, Adakite is an intermediate to felsic volcanic rock that has geochemical characteristics of magma which is said to be formed by partial melting of altered basalt that is subducted below volcanic arcs. Along with definition of Obsidian and Adakite, get to know about Properties of Obsidian and Adakite. Get to know more information about Obsidian and Adakite origin and discoverer, etymology and class.

History of Obsidian and Adakite

The history of Obsidian and Adakite 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 Adakite Origin and Discoverer

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

Etymology of Obsidian and Adakite

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

For Obsidian,

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

For Adakite,

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