Obsidian and Breccia Definition

Definition of Obsidian and Breccia

The general Obsidian and Breccia 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, Breccia is a rock consisting of angular fragments of stones which are cemented by finer calcareous material. Along with definition of Obsidian and Breccia, get to know about Properties of Obsidian and Breccia. Get to know more information about Obsidian and Breccia origin and discoverer, etymology and class.

History of Obsidian and Breccia

The history of Obsidian and Breccia 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 Breccia Origin and Discoverer

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

Etymology of Obsidian and Breccia

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

For Obsidian,

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

For Breccia,

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