Obsidian and Alkali Feldspar Granite Definition

Definition of Obsidian and Alkali Feldspar Granite

The general Obsidian and Alkali Feldspar Granite 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, Alkali feldspar granite, also known as red granite, is a felsic igneous rock and a type of granite rich in the mineral potassium feldspar. Along with definition of Obsidian and Alkali Feldspar Granite, get to know about Properties of Obsidian and Alkali Feldspar Granite. Get to know more information about Obsidian and Alkali Feldspar Granite origin and discoverer, etymology and class.

History of Obsidian and Alkali Feldspar Granite

The history of Obsidian and Alkali Feldspar Granite 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 Alkali Feldspar Granite Origin and Discoverer

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

Etymology of Obsidian and Alkali Feldspar Granite

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

For Obsidian,

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

For Alkali Feldspar Granite,

• Sub-class: Durable Rock and Hard Rock
• Group: Plutonic
• Other Categories: Coarse grained rock and Opaque rock