Syenite and Trondhjemite Definition

Definition of Syenite and Trondhjemite

The general Syenite and Trondhjemite 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, Trondhjemite is a leucocratic (light-colored) intrusive igneous rock. It is a variety of tonalite in which the plagioclase is mostly in the form of oligoclase. Trondhjemites are sometimes known as plagiogranites.. Along with definition of Syenite and Trondhjemite, get to know about Properties of Syenite and Trondhjemite. Get to know more information about Syenite and Trondhjemite origin and discoverer, etymology and class.

History of Syenite and Trondhjemite

The history of Syenite and Trondhjemite 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 Trondhjemite Origin and Discoverer

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

Etymology of Syenite and Trondhjemite

Along with Syenite and Trondhjemite definition, know more about the etymology of Syenite and Trondhjemite. Etymology of Syenite and Trondhjemite gives information about origin and formation of a particular rock. Know more about Formation of Syenite and Formation of Trondhjemite. The etymology of Syenite is From French syénite, from Latin Syenites (lapis ) (stone) of Syene while that of Trondhjemite 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 Trondhjemite belong to Igneous Rocks. The sub-class, group and other categories of Syenite and Trondhjemite 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 Trondhjemite,

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