Syenite and Obsidian Definition

Definition of Syenite and Obsidian

The general Syenite and Obsidian definition can be stated as: Syenite is a coarse-grained igneous rock which is composed mainly of alkali feldspar and various ferromagnesian minerals. 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 Syenite and Obsidian, get to know about Properties of Syenite and Obsidian. Get to know more information about Syenite and Obsidian origin and discoverer, etymology and class.

History of Syenite and Obsidian

The history of Syenite 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.

Syenite and Obsidian Origin and Discoverer

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

Etymology of Syenite and Obsidian

Along with Syenite and Obsidian definition, know more about the etymology of Syenite and Obsidian. Etymology of Syenite and Obsidian gives information about origin and formation of a particular rock. Know more about Formation of Syenite and Formation of Obsidian. The etymology of Syenite is From French syénite, from Latin Syenites (lapis ) (stone) of Syene while that of Obsidian is From French syénite, from Latin Syenites (lapis ) (stone) of Syene. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Syenite and Obsidian belong to Igneous Rocks. The sub-class, group and other categories of Syenite and Obsidian are listed below.

For Syenite,

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

For Obsidian,

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