Obsidian and Ganister Definition

Definition of Obsidian and Ganister

The general Obsidian and Ganister 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, A ganister is a hard, fine-grained quartzose sandstone or orthoquartzite which is basically used in the manufacture of silica brick typically used to line furnaces and is a type of sedimentary rocks.. Along with definition of Obsidian and Ganister, get to know about Properties of Obsidian and Ganister. Get to know more information about Obsidian and Ganister origin and discoverer, etymology and class.

History of Obsidian and Ganister

The history of Obsidian and Ganister 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 Ganister Origin and Discoverer

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

Etymology of Obsidian and Ganister

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

For Obsidian,

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

For Ganister,

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