Tonalite and Norite Definition

Definition of Tonalite and Norite

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

History of Tonalite and Norite

The history of Tonalite and Norite 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 Norite Origin and Discoverer

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

Etymology of Tonalite and Norite

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

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