Obsidian and Banded iron formation Definition

Definition of Obsidian and Banded iron formation

The general Obsidian and Banded iron formation 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, Banded iron formation are distinctive units of sedimentary rock that are almost always of Precambrian age. Along with definition of Obsidian and Banded iron formation, get to know about Properties of Obsidian and Banded iron formation. Get to know more information about Obsidian and Banded iron formation origin and discoverer, etymology and class.

History of Obsidian and Banded iron formation

The history of Obsidian and Banded iron formation 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 Banded iron formation Origin and Discoverer

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

Etymology of Obsidian and Banded iron formation

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

For Obsidian,

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

For Banded iron formation,

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