Nepheline Syenite and Tonalite Definition

Definition of Nepheline Syenite and Tonalite

The general Nepheline Syenite and Tonalite definition can be stated as: Nepheline Syenite is a holocrystalline plutonic rock resembling syenite but containing nepheline and lacking quartz. 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 Nepheline Syenite and Tonalite, get to know about Properties of Nepheline Syenite and Tonalite. Get to know more information about Nepheline Syenite and Tonalite origin and discoverer, etymology and class.

History of Nepheline Syenite and Tonalite

The history of Nepheline Syenite 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.

Nepheline Syenite and Tonalite Origin and Discoverer

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

Etymology of Nepheline Syenite and Tonalite

Along with Nepheline Syenite and Tonalite definition, know more about the etymology of Nepheline Syenite and Tonalite. Etymology of Nepheline Syenite and Tonalite gives information about origin and formation of a particular rock. Know more about Formation of Nepheline Syenite and Formation of Tonalite. The etymology of Nepheline Syenite is From origin of a Palaeozoic nepheline syenite from northern Shanxi Province, China while that of Tonalite is From origin of a Palaeozoic nepheline syenite from northern Shanxi Province, China. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Nepheline Syenite and Tonalite belong to Igneous Rocks. The sub-class, group and other categories of Nepheline Syenite and Tonalite are listed below.

For Nepheline Syenite,

• Sub-class: Durable Rock and Medium Hardness 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