Norite and Tonalite Definition

Definition of Norite and Tonalite

The general Norite and Tonalite definition can be stated as: Norite is a mafic intrusive igneous rock composed largely of the calcium-rich plagioclase labradorite, orthopyroxene, and olivine. 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 Norite and Tonalite, get to know about Properties of Norite and Tonalite. Get to know more information about Norite and Tonalite origin and discoverer, etymology and class.

History of Norite and Tonalite

The history of Norite 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.

Norite and Tonalite Origin and Discoverer

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

Etymology of Norite and Tonalite

Along with Norite and Tonalite definition, know more about the etymology of Norite and Tonalite. Etymology of Norite and Tonalite gives information about origin and formation of a particular rock. Know more about Formation of Norite and Formation of Tonalite. The etymology of Norite is From the Norwegian name for Norway, Norge while that of Tonalite is From the Norwegian name for Norway, Norge. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Norite and Tonalite belong to Igneous Rocks. The sub-class, group and other categories of Norite and Tonalite are listed below.

For Norite,

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