Appinite and Obsidian Definition

Definition of Appinite and Obsidian

The general Appinite and Obsidian definition can be stated as: Appinite is an igneous rock in which the crystals are so fine grained that individual minerals cannot be easily distinguished. 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 Appinite and Obsidian, get to know about Properties of Appinite and Obsidian. Get to know more information about Appinite and Obsidian origin and discoverer, etymology and class.

History of Appinite and Obsidian

The history of Appinite 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.

Appinite and Obsidian Origin and Discoverer

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

Etymology of Appinite and Obsidian

Along with Appinite and Obsidian definition, know more about the etymology of Appinite and Obsidian. Etymology of Appinite and Obsidian gives information about origin and formation of a particular rock. Know more about Formation of Appinite and Formation of Obsidian. The etymology of Appinite is From the variety of Lamprophyre Greek lampros bright and shining + porphureos purple while that of Obsidian is From the variety of Lamprophyre Greek lampros bright and shining + porphureos purple. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Appinite and Obsidian belong to Igneous Rocks. The sub-class, group and other categories of Appinite and Obsidian are listed below.

For Appinite,

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

For Obsidian,

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