Obsidian and Picrite Definition

Definition of Obsidian and Picrite

The general Obsidian and Picrite 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, Picrite is a variety of high-magnesium olivine basalt that is very rich in the mineral olivine. Along with definition of Obsidian and Picrite, get to know about Properties of Obsidian and Picrite. Get to know more information about Obsidian and Picrite origin and discoverer, etymology and class.

History of Obsidian and Picrite

The history of Obsidian and Picrite 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 Picrite Origin and Discoverer

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

Etymology of Obsidian and Picrite

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

For Obsidian,

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

For Picrite,

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