Obsidian and Quartzite Definition

Definition of Obsidian and Quartzite

The general Obsidian and Quartzite 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, Quartzite is a non-foliated metamorphic rock that forms by the metamorphism of pure quartz Sandstone. Along with definition of Obsidian and Quartzite, get to know about Properties of Obsidian and Quartzite. Get to know more information about Obsidian and Quartzite origin and discoverer, etymology and class.

History of Obsidian and Quartzite

The history of Obsidian and Quartzite 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 Quartzite Origin and Discoverer

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

Etymology of Obsidian and Quartzite

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

For Obsidian,

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

For Quartzite,

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