Nephelinite and Tonalite Definition

Definition of Nephelinite and Tonalite

The general Nephelinite and Tonalite definition can be stated as: Nephelinite is a fine-grained or aphanitic igneous rock made up almost entirely of nepheline and clinopyroxene (variety augite).. On the other hand, Tonalite is a coarse-grained plutonic rock consisting mainly of sodic plagioclase, quartz, and hornblende or other mafic minerals with phaneritic texture. Along with definition of Nephelinite and Tonalite, get to know about Properties of Nephelinite and Tonalite. Get to know more information about Nephelinite and Tonalite origin and discoverer, etymology and class.

History of Nephelinite and Tonalite

The history of Nephelinite and Tonalite 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.

Nephelinite and Tonalite Origin and Discoverer

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

Etymology of Nephelinite and Tonalite

Along with Nephelinite and Tonalite definition, know more about the etymology of Nephelinite and Tonalite. Etymology of Nephelinite and Tonalite gives information about origin and formation of a particular rock. Know more about Formation of Nephelinite and Formation of Tonalite. The etymology of Nephelinite is from French néphéline, from Greek nephelē while that of Tonalite is from French néphéline, from Greek nephelē. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Nephelinite and Tonalite belong to Igneous Rocks. The sub-class, group and other categories of Nephelinite and Tonalite are listed below.

For Nephelinite,

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

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