Tonalite and Rapakivi Granite Definition

Definition of Tonalite and Rapakivi Granite

The general Tonalite and Rapakivi Granite 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, Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase. Along with definition of Tonalite and Rapakivi Granite, get to know about Properties of Tonalite and Rapakivi Granite. Get to know more information about Tonalite and Rapakivi Granite origin and discoverer, etymology and class.

History of Tonalite and Rapakivi Granite

The history of Tonalite 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.

Tonalite and Rapakivi Granite Origin and Discoverer

Tonalite 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 Tonalite and Rapakivi Granite. In this section, you will know about Tonalite and Rapakivi Granite Origin and Discoverer. Origin of Tonalite is Tonale, Italy whereas Origin of Rapakivi Granite is Finland, Europe. It is interesting to know the name of Tonalite and Rapakivi Granite discoverer. The Discoverer of Tonalite is Unknown and the discoverer of Rapakivi Granite is Jakob Sederholm.

Etymology of Tonalite and Rapakivi Granite

Along with Tonalite and Rapakivi Granite definition, know more about the etymology of Tonalite and Rapakivi Granite. Etymology of Tonalite and Rapakivi Granite gives information about origin and formation of a particular rock. Know more about Formation of Tonalite and Formation of Rapakivi Granite. The etymology of Tonalite is From Tonale Pass, northern Italy, + -ite1 while that of Rapakivi Granite 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 Rapakivi Granite belong to Igneous Rocks. The sub-class, group and other categories of Tonalite and Rapakivi Granite 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 Rapakivi Granite,

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