Obsidian and Granophyre Definition

Definition of Obsidian and Granophyre

The general Obsidian and Granophyre 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, Granophyre is a type of granitic rock which consists of intergrown feldspar and quartz crystals in a medium to fine grained groundmass. Along with definition of Obsidian and Granophyre, get to know about Properties of Obsidian and Granophyre. Get to know more information about Obsidian and Granophyre origin and discoverer, etymology and class.

History of Obsidian and Granophyre

The history of Obsidian and Granophyre 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 Granophyre Origin and Discoverer

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

Etymology of Obsidian and Granophyre

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

For Obsidian,

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

For Granophyre,

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