Blue Granite and Obsidian Definition

Definition of Blue Granite and Obsidian

The general Blue Granite and Obsidian definition can be stated as: Blue Granite is an igneous rock and a variety of Larvikite, notable for the presence of thumbnail-sized blue crystals of feldspar. On the other hand, 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. Along with definition of Blue Granite and Obsidian, get to know about Properties of Blue Granite and Obsidian. Get to know more information about Blue Granite and Obsidian origin and discoverer, etymology and class.

History of Blue Granite and Obsidian

The history of Blue Granite and Obsidian 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.

Blue Granite and Obsidian Origin and Discoverer

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

Etymology of Blue Granite and Obsidian

Along with Blue Granite and Obsidian definition, know more about the etymology of Blue Granite and Obsidian. Etymology of Blue Granite and Obsidian gives information about origin and formation of a particular rock. Know more about Formation of Blue Granite and Formation of Obsidian. The etymology of Blue Granite is From the color of rock, Blue while that of Obsidian is From the color of rock, Blue. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Blue Granite and Obsidian belong to Igneous Rocks. The sub-class, group and other categories of Blue Granite and Obsidian are listed below.

For Blue Granite,

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

For Obsidian,

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