Soapstone and Obsidian Definition

Definition of Soapstone and Obsidian

The general Soapstone and Obsidian definition can be stated as: It is a metamorphic magnesium rich rock because it is composed of the mineral talc. 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 Soapstone and Obsidian, get to know about Properties of Soapstone and Obsidian. Get to know more information about Soapstone and Obsidian origin and discoverer, etymology and class.

History of Soapstone and Obsidian

The history of Soapstone 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.

Soapstone and Obsidian Origin and Discoverer

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

Etymology of Soapstone and Obsidian

Along with Soapstone and Obsidian definition, know more about the etymology of Soapstone and Obsidian. Etymology of Soapstone and Obsidian gives information about origin and formation of a particular rock. Know more about Formation of Soapstone and Formation of Obsidian. The etymology of Soapstone is From 17th century, because of its greasy feel and use like a soap while that of Obsidian is From 17th century, because of its greasy feel and use like a soap. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Soapstone belongs to Metamorphic Rocks while Obsidian belongs to Igneous Rocks. The sub-class, group and other categories of Soapstone and Obsidian are listed below.

For Soapstone,

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

For Obsidian,

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