Obsidian and Hornblendite Definition

Definition of Obsidian and Hornblendite

The general Obsidian and Hornblendite 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, Hornblendite is a type of igneous plutonic rock consisting mainly of amphibole hornblende and is a type of Amphibolite rock. Along with definition of Obsidian and Hornblendite, get to know about Properties of Obsidian and Hornblendite. Get to know more information about Obsidian and Hornblendite origin and discoverer, etymology and class.

History of Obsidian and Hornblendite

The history of Obsidian and Hornblendite 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 Hornblendite Origin and Discoverer

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

Etymology of Obsidian and Hornblendite

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

For Obsidian,

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

For Hornblendite,

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