Pegmatite and Greywacke Definition

Definition of Pegmatite and Greywacke

The general Pegmatite and Greywacke definition can be stated as: Pegmatite rock is a holocrystalline, intrusive igneous rock which is composed of interlocking phaneritic crystals. On the other hand, Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay. Along with definition of Pegmatite and Greywacke, get to know about Properties of Pegmatite and Greywacke. Get to know more information about Pegmatite and Greywacke origin and discoverer, etymology and class.

History of Pegmatite and Greywacke

The history of Pegmatite and Greywacke 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 Greywacke Origin and Discoverer

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

Etymology of Pegmatite and Greywacke

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

For Pegmatite,

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

For Greywacke,

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