Minette and Obsidian Definition

Definition of Minette and Obsidian

The general Minette and Obsidian definition can be stated as: Minette is a variety of Lamprophyre and is porphyritic alkaline igneous rock which is mainly dominated by biotite and potassic 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 Minette and Obsidian, get to know about Properties of Minette and Obsidian. Get to know more information about Minette and Obsidian origin and discoverer, etymology and class.

History of Minette and Obsidian

The history of Minette 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.

Minette and Obsidian Origin and Discoverer

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

Etymology of Minette and Obsidian

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

For Minette,

• 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