Obsidian and Claystone Definition

Definition of Obsidian and Claystone

The general Obsidian and Claystone 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, Claystone is a fine-grained, dark gray to pink sedimentary rock which mainly consists of compacted and hardened clay. Along with definition of Obsidian and Claystone, get to know about Properties of Obsidian and Claystone. Get to know more information about Obsidian and Claystone origin and discoverer, etymology and class.

History of Obsidian and Claystone

The history of Obsidian and Claystone 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 Claystone Origin and Discoverer

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

Etymology of Obsidian and Claystone

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

For Obsidian,

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

For Claystone,

• Sub-class: Durable Rock and Medium Hardness Rock
• Group: Not applicable
• Other Categories: Fine grained rock and Opaque rock