Pegmatite and Trondhjemite Definition

Definition of Pegmatite and Trondhjemite

The general Pegmatite and Trondhjemite definition can be stated as: Pegmatite rock is a holocrystalline, intrusive igneous rock which is composed of interlocking phaneritic crystals. 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 Pegmatite and Trondhjemite, get to know about Properties of Pegmatite and Trondhjemite. Get to know more information about Pegmatite and Trondhjemite origin and discoverer, etymology and class.

History of Pegmatite and Trondhjemite

The history of Pegmatite 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.

Pegmatite and Trondhjemite Origin and Discoverer

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

Etymology of Pegmatite and Trondhjemite

Along with Pegmatite and Trondhjemite definition, know more about the etymology of Pegmatite and Trondhjemite. Etymology of Pegmatite and Trondhjemite gives information about origin and formation of a particular rock. Know more about Formation of Pegmatite and Formation of Trondhjemite. The etymology of Pegmatite is From Greek pegma, pegmat which means- thing joined together + -ite while that of Trondhjemite is From Greek pegma, pegmat which means- thing joined together + -ite. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Pegmatite and Trondhjemite belong to Igneous Rocks. The sub-class, group and other categories of Pegmatite and Trondhjemite are listed below.

For Pegmatite,

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