Trondhjemite and Syenite Definition

Definition of Trondhjemite and Syenite

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

History of Trondhjemite and Syenite

The history of Trondhjemite and Syenite 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.

Trondhjemite and Syenite Origin and Discoverer

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

Etymology of Trondhjemite and Syenite

Along with Trondhjemite and Syenite definition, know more about the etymology of Trondhjemite and Syenite. Etymology of Trondhjemite and Syenite gives information about origin and formation of a particular rock. Know more about Formation of Trondhjemite and Formation of Syenite. The etymology of Trondhjemite is not available while that of Syenite is not available. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Trondhjemite and Syenite belong to Igneous Rocks. The sub-class, group and other categories of Trondhjemite and Syenite are listed below.

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

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