Pegmatite and Argillite Definition

Definition of Pegmatite and Argillite

The general Pegmatite and Argillite definition can be stated as: Pegmatite rock is a holocrystalline, intrusive igneous rock which is composed of interlocking phaneritic crystals. On the other hand, Argillites are highly compact sedimentary or slightly metamorphosed rocks that consist largely or wholly of particles of clay or silt but lack the fissility of shale or the cleavage characteristic of slate. Along with definition of Pegmatite and Argillite, get to know about Properties of Pegmatite and Argillite. Get to know more information about Pegmatite and Argillite origin and discoverer, etymology and class.

History of Pegmatite and Argillite

The history of Pegmatite and Argillite 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 Argillite Origin and Discoverer

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

Etymology of Pegmatite and Argillite

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

For Pegmatite,

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

For Argillite,

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