Obsidian and Minette Definition

Definition of Obsidian and Minette

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

History of Obsidian and Minette

The history of Obsidian and Minette 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 Minette Origin and Discoverer

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

Etymology of Obsidian and Minette

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

For Obsidian,

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

For Minette,

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