Syenite and Tonalite Definition

Definition of Syenite and Tonalite

The general Syenite and Tonalite definition can be stated as: Syenite is a coarse-grained igneous rock which is composed mainly of alkali feldspar and various ferromagnesian minerals. 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 Syenite and Tonalite, get to know about Properties of Syenite and Tonalite. Get to know more information about Syenite and Tonalite origin and discoverer, etymology and class.

History of Syenite and Tonalite

The history of 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.

Syenite and Tonalite Origin and Discoverer

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 Syenite and Tonalite. In this section, you will know about Syenite and Tonalite Origin and Discoverer. Origin of Syenite is Unknown whereas Origin of Tonalite is Tonale, Italy. It is interesting to know the name of Syenite and Tonalite discoverer. The discoverer of Syenite and Tonalite are Unknown.

Etymology of Syenite and Tonalite

Along with Syenite and Tonalite definition, know more about the etymology of Syenite and Tonalite. Etymology of Syenite and Tonalite gives information about origin and formation of a particular rock. Know more about Formation of Syenite and Formation of Tonalite. The etymology of Syenite is From French syénite, from Latin Syenites (lapis ) (stone) of Syene while that of Tonalite is From French syénite, from Latin Syenites (lapis ) (stone) of Syene. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Syenite and Tonalite belong to Igneous Rocks. The sub-class, group and other categories of Syenite and Tonalite are listed below.

For Syenite,

• Sub-class: Durable Rock and Medium Hardness Rock
• Group: Plutonic
• Other Categories: Coarse grained rock, Fine grained rock, Medium 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