Pegmatite and Rapakivi Granite Definition

Definition of Pegmatite and Rapakivi Granite

The general Pegmatite and Rapakivi Granite definition can be stated as: Pegmatite rock is a holocrystalline, intrusive igneous rock which is composed of interlocking phaneritic crystals. On the other hand, Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase. Along with definition of Pegmatite and Rapakivi Granite, get to know about Properties of Pegmatite and Rapakivi Granite. Get to know more information about Pegmatite and Rapakivi Granite origin and discoverer, etymology and class.

History of Pegmatite and Rapakivi Granite

The history of Pegmatite and Rapakivi Granite 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 Rapakivi Granite Origin and Discoverer

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

Etymology of Pegmatite and Rapakivi Granite

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

For Pegmatite,

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

For Rapakivi Granite,

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