Foidolite and Obsidian Definition

Definition of Foidolite and Obsidian

The general Foidolite and Obsidian definition can be stated as: Foidolite is a rare type of coarse-grained intrusive igneous rock with a feldspathoid mineral content greater than 60%. 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 Foidolite and Obsidian, get to know about Properties of Foidolite and Obsidian. Get to know more information about Foidolite and Obsidian origin and discoverer, etymology and class.

History of Foidolite and Obsidian

The history of Foidolite 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.

Foidolite and Obsidian Origin and Discoverer

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

Etymology of Foidolite and Obsidian

Along with Foidolite and Obsidian definition, know more about the etymology of Foidolite and Obsidian. Etymology of Foidolite and Obsidian gives information about origin and formation of a particular rock. Know more about Formation of Foidolite and Formation of Obsidian. The etymology of Foidolite is From the mineral feldspathoid which is the main content of rock while that of Obsidian is From the mineral feldspathoid which is the main content of rock. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Foidolite and Obsidian belong to Igneous Rocks. The sub-class, group and other categories of Foidolite and Obsidian are listed below.

For Foidolite,

• Sub-class: Durable Rock and Soft 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