Pegmatite and Tachylite Definition

Definition of Pegmatite and Tachylite

The general Pegmatite and Tachylite definition can be stated as: Pegmatite rock is a holocrystalline, intrusive igneous rock which is composed of interlocking phaneritic crystals. On the other hand, Tachylite is a vitreous form of basaltic volcanic glass. This glass is formed naturally by the rapid cooling of molten basalt. Along with definition of Pegmatite and Tachylite, get to know about Properties of Pegmatite and Tachylite. Get to know more information about Pegmatite and Tachylite origin and discoverer, etymology and class.

History of Pegmatite and Tachylite

The history of Pegmatite and Tachylite 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.

Pegmatite and Tachylite Origin and Discoverer

Pegmatite and Tachylite definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Formation of Pegmatite and Tachylite. In this section, you will know about Pegmatite and Tachylite Origin and Discoverer. Origin of Pegmatite is Unknown whereas Origin of Tachylite is Iceland. It is interesting to know the name of Pegmatite and Tachylite discoverer. The Discoverer of Pegmatite is R. J. Hauy and the discoverer of Tachylite is Unknown.

Etymology of Pegmatite and Tachylite

Along with Pegmatite and Tachylite definition, know more about the etymology of Pegmatite and Tachylite. Etymology of Pegmatite and Tachylite gives information about origin and formation of a particular rock. Know more about Formation of Pegmatite and Formation of Tachylite. The etymology of Pegmatite is From Greek pegma, pegmat which means- thing joined together + -ite while that of Tachylite is From Greek pegma, pegmat which means- thing joined together + -ite. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Pegmatite and Tachylite belong to Igneous Rocks. The sub-class, group and other categories of Pegmatite and Tachylite are listed below.

For Pegmatite,

• Sub-class: Durable Rock and Hard Rock
• Group: Plutonic
• Other Categories: Coarse grained rock and Opaque rock

For Tachylite,

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