Argillite and Pegmatite Definition

Definition of Argillite and Pegmatite

The general Argillite and Pegmatite definition can be stated as: 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. On the other hand, Pegmatite rock is a holocrystalline, intrusive igneous rock which is composed of interlocking phaneritic crystals. Along with definition of Argillite and Pegmatite, get to know about Properties of Argillite and Pegmatite. Get to know more information about Argillite and Pegmatite origin and discoverer, etymology and class.

History of Argillite and Pegmatite

The history of Argillite and Pegmatite 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.

Argillite and Pegmatite Origin and Discoverer

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

Etymology of Argillite and Pegmatite

Along with Argillite and Pegmatite definition, know more about the etymology of Argillite and Pegmatite. Etymology of Argillite and Pegmatite gives information about origin and formation of a particular rock. Know more about Formation of Argillite and Formation of Pegmatite. The etymology of Argillite is From Latin Argilla (clay) and -ite in English which became agrilla+ -ite = Argillite while that of Pegmatite is From Latin Argilla (clay) and -ite in English which became agrilla+ -ite = Argillite. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Argillite belongs to Sedimentary Rocks while Pegmatite belongs to Igneous Rocks. The sub-class, group and other categories of Argillite and Pegmatite are listed below.

For Argillite,

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

For Pegmatite,

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