Tonalite and Pegmatite Definition

Definition of Tonalite and Pegmatite

The general Tonalite and Pegmatite definition can be stated as: Tonalite is a coarse-grained plutonic rock consisting mainly of sodic plagioclase, quartz, and hornblende or other mafic minerals with phaneritic texture. On the other hand, Pegmatite rock is a holocrystalline, intrusive igneous rock which is composed of interlocking phaneritic crystals. Along with definition of Tonalite and Pegmatite, get to know about Properties of Tonalite and Pegmatite. Get to know more information about Tonalite and Pegmatite origin and discoverer, etymology and class.

History of Tonalite and Pegmatite

The history of Tonalite 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.

Tonalite and Pegmatite Origin and Discoverer

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

Etymology of Tonalite and Pegmatite

Along with Tonalite and Pegmatite definition, know more about the etymology of Tonalite and Pegmatite. Etymology of Tonalite and Pegmatite gives information about origin and formation of a particular rock. Know more about Formation of Tonalite and Formation of Pegmatite. The etymology of Tonalite is From Tonale Pass, northern Italy, + -ite1 while that of Pegmatite is From Tonale Pass, northern Italy, + -ite1. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Tonalite and Pegmatite belong to Igneous Rocks. The sub-class, group and other categories of Tonalite and Pegmatite are listed below.

For Tonalite,

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

For Pegmatite,

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