Obsidian and Metapelite Definition

Definition of Obsidian and Metapelite

The general Obsidian and Metapelite 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, Metapelite is an old and currently not widely used field geological term for a clay rich fine-grained clastic sediment or sedimentary rock, i.e. mud or a mudstone. Along with definition of Obsidian and Metapelite, get to know about Properties of Obsidian and Metapelite. Get to know more information about Obsidian and Metapelite origin and discoverer, etymology and class.

History of Obsidian and Metapelite

The history of Obsidian and Metapelite 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 Metapelite Origin and Discoverer

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

Etymology of Obsidian and Metapelite

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

For Obsidian,

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

For Metapelite,

• Sub-class: Durable Rock and Medium Hardness Rock
• Group: Not applicable
• Other Categories: Coarse grained rock, Fine grained rock, Medium grained rock and Opaque rock