Pegmatite and Pseudotachylite Definition

Definition of Pegmatite and Pseudotachylite

The general Pegmatite and Pseudotachylite definition can be stated as: Pegmatite rock is a holocrystalline, intrusive igneous rock which is composed of interlocking phaneritic crystals. On the other hand, Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.. Along with definition of Pegmatite and Pseudotachylite, get to know about Properties of Pegmatite and Pseudotachylite. Get to know more information about Pegmatite and Pseudotachylite origin and discoverer, etymology and class.

History of Pegmatite and Pseudotachylite

The history of Pegmatite and Pseudotachylite 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 Pseudotachylite Origin and Discoverer

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

Etymology of Pegmatite and Pseudotachylite

Along with Pegmatite and Pseudotachylite definition, know more about the etymology of Pegmatite and Pseudotachylite. Etymology of Pegmatite and Pseudotachylite gives information about origin and formation of a particular rock. Know more about Formation of Pegmatite and Formation of Pseudotachylite. The etymology of Pegmatite is From Greek pegma, pegmat which means- thing joined together + -ite while that of Pseudotachylite 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 belongs to Igneous Rocks while Pseudotachylite belongs to Metamorphic Rocks. The sub-class, group and other categories of Pegmatite and Pseudotachylite are listed below.

For Pegmatite,

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

For Pseudotachylite,

• Sub-class: Durable Rock and Hard Rock
• Group: Not applicable
• Other Categories: Fine grained rock and Opaque rock