Obsidian and Luxullianite Definition

Definition of Obsidian and Luxullianite

The general Obsidian and Luxullianite 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, Luxullianite is a rare type of granite, known for presence of clusters of radially arranged acicular tourmaline crystals which are enclosed by phenocrysts of orthoclase and quartz in a matrix of quartz, tourmaline, alkali feldspar, brown mica.. Along with definition of Obsidian and Luxullianite, get to know about Properties of Obsidian and Luxullianite. Get to know more information about Obsidian and Luxullianite origin and discoverer, etymology and class.

History of Obsidian and Luxullianite

The history of Obsidian and Luxullianite 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 Luxullianite Origin and Discoverer

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

Etymology of Obsidian and Luxullianite

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

For Obsidian,

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

For Luxullianite,

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